CASCACascade Atlas

Evidence dossier

CVE-2026-21589

This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center.

Exploited in the wild (CISA KEV since Oct 15, 2026). atlassian reports CVSS 4.0 9.3. EPSS estimates 12.7% exploit likelihood as of Oct 22, 2026.

70.4–82.8Priority evidence range
Evidence through Oct 22, 2026, 6:07 PM UTC

As of Oct 22, 2026

Normalized restatement

This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center. Crowd Data Center, Crucible and Fisheye. This Arbitrary File Access vulnerability allows an unauthenticated attacker to access specific files within the web application root directory in affected versions. Exploitation requires prior knowledge of the target file's exact name and path; this vulnerability does not allow attackers to enumerate or list directory contents. In some configurations, there may be some sensitive files that make this highly severe. This vulnerability allows an unauthenticated remote attacker to access specific files within the web application root directory in affected versions. The vulnerability must be addressed for affected versions of: -- Bitbucket Data Center, introduced in version >= 4.6.0, fix versions: 9.4.26, 10.2.8, 10.5.1 -- Confluence Data Center, introduced in version >= 5.10.0, fix versions 9.2.26, 10.2.19 -- Crowd Data Center, introduced in version >= 2.11.0, fix versions 6.3.7, 7.0.3, 7.1.7, 7.2.4 -- Jira Software Data Center, introduced in version >= 7.1.0, fix versions 9.12.40, 10.3.26, 11.3.12 -- Jira Service Management Data Center, introduced in version >= 3.1.0, fix versions 5.12.40, 10.3.26, 11.3.12 -- Bamboo Data Center >= 7.0.1, fix versions 10.2.24, 12.1.12 -- Crucible, fix versions 4.9.15 -- Fisheye, fix version 4.9.15 -- Exploitation requires prior knowledge of the target file's exact name and path. The vulnerability does not include the capability to enumerate or list directory contents.

State
PUBLISHED
Published
Oct 5, 2026
Updated
Oct 19, 2026
Evidence coverage
85%

Evidence chronology

What was known when

Download this view's receipt →
  1. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability
    Original evidence ↗
  2. Source dateSource date omittedFirst observed by CASCA
    atlassian

    Record text: This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center. Crowd Data Center, Crucible and Fisheye. This Arbitrary File Access vulnerability allows an unauthenticated attacker to access specific files within the web application root directory in affected versions. Exploitation requires prior knowledge of the target file's exact name and path; this vulnerability does not allow attackers to enumerate or list directory contents. In some configurations, there may be some sensitive files that make this highly severe. This vulnerability allows an unauthenticated remote attacker to access specific files within the web application root directory in affected versions. The vulnerability must be addressed for affected versions of: -- Bitbucket Data Center, introduced in version >= 4.6.0, fix versions: 9.4.26, 10.2.8, 10.5.1 -- Confluence Data Center, introduced in version >= 5.10.0, fix versions 9.2.26, 10.2.19 -- Crowd Data Center, introduced in version >= 2.11.0, fix versions 6.3.7, 7.0.3, 7.1.7, 7.2.4 -- Jira Software Data Center, introduced in version >= 7.1.0, fix versions 9.12.40, 10.3.26, 11.3.12 -- Jira Service Management Data Center, introduced in version >= 3.1.0, fix versions 5.12.40, 10.3.26, 11.3.12 -- Bamboo Data Center >= 7.0.1, fix versions 10.2.24, 12.1.12 -- Crucible, fix versions 4.9.15 -- Fisheye, fix version 4.9.15 -- Exploitation requires prior knowledge of the target file's exact name and path. The vulnerability does not include the capability to enumerate or list directory contents.

    Inspect raw assertion
    Field
    container
    Value
    This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center. Crowd Data Center, Crucible and Fisheye. This Arbitrary File Access vulnerability allows an unauthenticated attacker to access specific files within the web application root directory in affected versions. Exploitation requires prior knowledge of the target file's exact name and path; this vulnerability does not allow attackers to enumerate or list directory contents. In some configurations, there may be some sensitive files that make this highly severe. This vulnerability allows an unauthenticated remote attacker to access specific files within the web application root directory in affected versions. The vulnerability must be addressed for affected versions of: -- Bitbucket Data Center, introduced in version >= 4.6.0, fix versions: 9.4.26, 10.2.8, 10.5.1 -- Confluence Data Center, introduced in version >= 5.10.0, fix versions 9.2.26, 10.2.19 -- Crowd Data Center, introduced in version >= 2.11.0, fix versions 6.3.7, 7.0.3, 7.1.7, 7.2.4 -- Jira Software Data Center, introduced in version >= 7.1.0, fix versions 9.12.40, 10.3.26, 11.3.12 -- Jira Service Management Data Center, introduced in version >= 3.1.0, fix versions 5.12.40, 10.3.26, 11.3.12 -- Bamboo Data Center >= 7.0.1, fix versions 10.2.24, 12.1.12 -- Crucible, fix versions 4.9.15 -- Fisheye, fix version 4.9.15 -- Exploitation requires prior knowledge of the target file's exact name and path. The vulnerability does not include the capability to enumerate or list directory contents.
    Original evidence ↗
  3. Source dateSource date omittedFirst observed by CASCA
    CISA-ADP

    Record text: CISA ADP Vulnrichment

    Inspect raw assertion
    Field
    container
    Value
    CISA ADP Vulnrichment
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 12.71% probability · 96.26th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.127110000000; percentile 0.962610000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Oct 15, 2026 · first observed Oct 16, 2026

Exploit likelihood12.71%

FIRST EPSS · score date Oct 22, 2026 · 96.3th percentile · first observed Oct 22, 2026

SeverityCVSS 9.3

atlassian · CVSS 4.0 · first observed Oct 20, 2026 · same-version scores align in this snapshot

Evidence detail

Source limits and decisions

Why each evidence state has this value

casca-unknown-reasons-v1
Exploitation statusLast verified source snapshot retained

The last verified source boundary remains in force for this claim.

Revision
evidence-policy-v1.1.0
Cutoff
Oct 22, 2026
Resolution
Review source contract
Exploit likelihoodEvidence supported

Eligible evidence is present for this bounded claim.

Revision
evidence-policy-v1.1.0
Cutoff
Oct 22, 2026
Resolution
None
Severity assessmentEvidence supported

Eligible evidence is present for this bounded claim.

Revision
casca-direct-cvss-eligibility-v1
Cutoff
Oct 22, 2026
Resolution
None
Affected productsSource-reported scope

The cited source assertion is retained while canonical product linkage remains open.

Revision
casca-factor-d-obligations-v1
Cutoff
Oct 22, 2026
Resolution
Resolve identity

Source comparison

Who said what

CISA KEVOriginal assertion
Exploitation cataloged

Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
atlassianOriginal assertion
Record text

This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center. Crowd Data Center, Crucible and Fisheye. This Arbitrary File Access vulnerability allows an unauthenticated attacker to access specific files within the web application root directory in affected versions. Exploitation requires prior knowledge of the target file's exact name and path; this vulnerability does not allow attackers to enumerate or list directory contents. In some configurations, there may be some sensitive files that make this highly severe. This vulnerability allows an unauthenticated remote attacker to access specific files within the web application root directory in affected versions. The vulnerability must be addressed for affected versions of: -- Bitbucket Data Center, introduced in version >= 4.6.0, fix versions: 9.4.26, 10.2.8, 10.5.1 -- Confluence Data Center, introduced in version >= 5.10.0, fix versions 9.2.26, 10.2.19 -- Crowd Data Center, introduced in version >= 2.11.0, fix versions 6.3.7, 7.0.3, 7.1.7, 7.2.4 -- Jira Software Data Center, introduced in version >= 7.1.0, fix versions 9.12.40, 10.3.26, 11.3.12 -- Jira Service Management Data Center, introduced in version >= 3.1.0, fix versions 5.12.40, 10.3.26, 11.3.12 -- Bamboo Data Center >= 7.0.1, fix versions 10.2.24, 12.1.12 -- Crucible, fix versions 4.9.15 -- Fisheye, fix version 4.9.15 -- Exploitation requires prior knowledge of the target file's exact name and path. The vulnerability does not include the capability to enumerate or list directory contents.

Inspect raw assertion
Field
container
Value
This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center. Crowd Data Center, Crucible and Fisheye. This Arbitrary File Access vulnerability allows an unauthenticated attacker to access specific files within the web application root directory in affected versions. Exploitation requires prior knowledge of the target file's exact name and path; this vulnerability does not allow attackers to enumerate or list directory contents. In some configurations, there may be some sensitive files that make this highly severe. This vulnerability allows an unauthenticated remote attacker to access specific files within the web application root directory in affected versions. The vulnerability must be addressed for affected versions of: -- Bitbucket Data Center, introduced in version >= 4.6.0, fix versions: 9.4.26, 10.2.8, 10.5.1 -- Confluence Data Center, introduced in version >= 5.10.0, fix versions 9.2.26, 10.2.19 -- Crowd Data Center, introduced in version >= 2.11.0, fix versions 6.3.7, 7.0.3, 7.1.7, 7.2.4 -- Jira Software Data Center, introduced in version >= 7.1.0, fix versions 9.12.40, 10.3.26, 11.3.12 -- Jira Service Management Data Center, introduced in version >= 3.1.0, fix versions 5.12.40, 10.3.26, 11.3.12 -- Bamboo Data Center >= 7.0.1, fix versions 10.2.24, 12.1.12 -- Crucible, fix versions 4.9.15 -- Fisheye, fix version 4.9.15 -- Exploitation requires prior knowledge of the target file's exact name and path. The vulnerability does not include the capability to enumerate or list directory contents.
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CISA-ADPIndependent enrichment
Record text

CISA ADP Vulnrichment

Inspect raw assertion
Field
container
Value
CISA ADP Vulnrichment
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

12.71% probability · 96.26th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.127110000000; percentile 0.962610000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →

29 scope groups

atlassian · source assertedAtlassianBamboo Data CenterDirect source scope
Affected: All other versionsUnaffected: Patch version 10.2.24 and laterUnaffected: Patch version 12.1.12 and later
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "All other versions"}, {"status": "unaffected", "version": "Patch version 10.2.24 and later"}, {"status": "unaffected", "version": "Patch version 12.1.12 and later"}]
atlassian · source assertedAtlassianBitbucket Data CenterDirect source scope
Affected: All other versionsUnaffected: Patch version 10.2.8 and laterUnaffected: Patch version 10.5.1 and laterUnaffected: Patch version 9.4.26 and later
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "All other versions"}, {"status": "unaffected", "version": "Patch version 10.2.8 and later"}, {"status": "unaffected", "version": "Patch version 10.5.1 and later"}, {"status": "unaffected", "version": "Patch version 9.4.26 and later"}]
atlassian · source assertedAtlassianConfluence Data CenterDirect source scope
Affected: All other versionsUnaffected: Patch version 10.2.19 and laterUnaffected: Patch version 9.2.26 and later
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "All other versions"}, {"status": "unaffected", "version": "Patch version 10.2.19 and later"}, {"status": "unaffected", "version": "Patch version 9.2.26 and later"}]
atlassian · source assertedAtlassianCrowd Data CenterDirect source scope
Affected: All other versionsUnaffected: Patch version 7.2.4 and laterUnaffected: Patch version 7.1.7 and laterUnaffected: Patch version 7.0.3 and laterUnaffected: Patch version 6.3.7 and later
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "All other versions"}, {"status": "unaffected", "version": "Patch version 7.2.4 and later"}, {"status": "unaffected", "version": "Patch version 7.1.7 and later"}, {"status": "unaffected", "version": "Patch version 7.0.3 and later"}, {"status": "unaffected", "version": "Patch version 6.3.7 and later"}]
atlassian · source assertedAtlassianCrucible Data CenterDirect source scope
Affected: All other versionsUnaffected: Patch version 4.9.15 and later
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "All other versions"}, {"status": "unaffected", "version": "Patch version 4.9.15 and later"}]
atlassian · source assertedAtlassianFisheye Data CenterDirect source scope
Affected: All other versionsUnaffected: Patch version 4.9.15 and later
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "All other versions"}, {"status": "unaffected", "version": "Patch version 4.9.15 and later"}]
atlassian · source assertedAtlassianJira Service Management Data CenterDirect source scope
Affected: All other versionsUnaffected: Patch version 11.3.12 and laterUnaffected: Patch version 10.3.26 and laterUnaffected: Patch version 5.12.40 and later
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "All other versions"}, {"status": "unaffected", "version": "Patch version 11.3.12 and later"}, {"status": "unaffected", "version": "Patch version 10.3.26 and later"}, {"status": "unaffected", "version": "Patch version 5.12.40 and later"}]
atlassian · source assertedAtlassianJira Software Data CenterDirect source scope
Affected: All other versionsUnaffected: Patch version 11.3.12 and laterUnaffected: Patch version 10.3.26 and laterUnaffected: Patch version 9.12.40 and later
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "All other versions"}, {"status": "unaffected", "version": "Patch version 11.3.12 and later"}, {"status": "unaffected", "version": "Patch version 10.3.26 and later"}, {"status": "unaffected", "version": "Patch version 9.12.40 and later"}]
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:atlassian:bamboo:*:*:*:*:*:*:*:*; start including 7.0.1; end excluding 10.2.24
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:atlassian:bamboo:*:*:*:*:*:*:*:*; start including 11.0.0; end excluding 12.1.12
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:atlassian:bitbucket_data_center:*:*:*:*:*:*:*:*; start including 7.17.0; end excluding 9.4.26
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:atlassian:bitbucket_data_center:*:*:*:*:*:*:*:*; start including 9.5.0; end excluding 10.2.8
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:atlassian:bitbucket_data_center:*:*:*:*:*:*:*:*; start including 10.3.0; end excluding 10.5.1
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:atlassian:bitbucket_server:*:*:*:*:*:*:*:*; start including 4.6.0; end including 8.14.6
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*; start including 5.10.0; end excluding 9.2.26
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*; start including 9.3.0; end excluding 10.2.19
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:atlassian:crowd:*:*:*:*:*:*:*:*; start including 2.11.0; end excluding 6.3.7
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:atlassian:crowd:*:*:*:*:*:*:*:*; start including 7.0.0; end excluding 7.0.3
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:atlassian:crowd:*:*:*:*:*:*:*:*; start including 7.1.0; end excluding 7.1.7
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:atlassian:crowd:*:*:*:*:*:*:*:*; start including 7.2.0; end excluding 7.2.4
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:atlassian:crucible:*:*:*:*:*:*:*:*; end excluding 4.9.15
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:atlassian:fisheye:*:*:*:*:*:*:*:*; end excluding 4.9.15
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:*; start including 7.1.0; end excluding 9.12.40
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:*; start including 9.13.0; end excluding 10.3.26
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:*; start including 10.4.0; end excluding 11.3.12

Affected-product evidence

Accepted scope and product mapping

0 canonical links · 2 source-reported links

Source-reported scopeSource-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Vendor specified only by source · Product specified only by source

Source class
Direct cve affected
Assertions
8
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
1a6bf954-078e-4316-82a9-63212731a2dd25bce0dd-fb03-4b39-bbf7-561e7c362bb13c74d986-fe3d-4633-8ad0-9a202dbdf79744d5adb8-7abe-4be2-9316-b4529ab05a44590befed-22e3-4e84-9350-22ff5ad01417603055c6-7ca4-40fb-83ac-05b75b26d6d478e10c19-b894-4d8f-8dc6-abff36c6fec7b8300b1a-98cd-4775-a150-439939a48810
Source-reported scopeSource-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Vendor specified only by source · Product specified only by source

Source class
Nvd cpe vulnerable target
Assertions
21
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
09808560-1705-4d63-abdc-409a83b08e621169f298-6774-4381-8c7c-c005446efddb203f16e4-acf1-45c6-8c5a-5cc30443042e2b5d4816-9bd2-4128-90bf-0764425421712f496bd6-2cd5-4534-825a-213f0b7ae7e72fc04143-e989-4a76-bfd2-531f862daaf233394857-8f4d-4ef1-accc-4dc4fda99862337bd3c4-2e36-4c03-a2e0-2ad6b37cd2a3612132c7-cfe7-483f-9572-76b9202217e97a00b3d3-f8e6-4495-a692-c29d086e45507b68fe41-fac0-4003-9257-332f818ac0567ba6acee-ca94-4c52-b2d9-1635af6a4f6f9053def2-1ce5-4a0c-98e4-a0b383ef5b26ab3ed129-54f8-4005-8905-5e70ead428c5b2951a6e-8773-484f-b086-bbe5e61c13fcb3460900-f9a0-43c6-ae6b-cd799a269a21b6c7412f-f5ff-436d-ae39-7d58dddb5fb3bca76593-ffa3-4f96-b4cb-d130426c5d83beec6102-927e-4f30-b361-c3fbc0d53e9bdaa9389b-a761-48b5-aa55-d2e0049d9daafc3975aa-a50c-44c8-a97b-d1b43c64e344

Assessments

CVSS by origin

7.5
NVDCVSS 3.1 · role Primary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
9.3
security@atlassian.comCVSS 4.0 · role Secondary · priority eligiblevalid_matchCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
9.3
atlassianCVSS 4.0 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H

Direct CVE/CNA normalized decisions

9.3Priority eligible

atlassian

CVSS 4.0 · Primary · Original assertion · rank 1

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H
Validation
Valid match
Recomputed
9.3
Decision reason
Evidence supported
Policy
casca-direct-cvss-eligibility-v1

Assessments are retained side by side under closed precedence. Cascade never averages CVSS.

Evidence boundaries

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; remaining scope stays source-scoped.
  • NVD-carried upstream facts remain derivative; independent corroboration requires a separately authored source.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.
  • OSV aggregation and OSV-converted NVD material are not independent corroboration.
  • Red Hat facts are vendor assertions for the exact supplied products.
  • Nonmembership and not-yet-observed states are not proof of safety.