CASCACascade Atlas

Evidence dossier

CVE-2018-7602

Drupal core - Highly critical - Remote Code Execution - SA-CORE-2018-004

Exploited in the wild (CISA KEV since Apr 13, 2022). NVD reports CVSS 3.1 9.8. Severity assessments differ within at least one CVSS version. EPSS estimates 99.2% exploit likelihood as of Oct 21, 2026.

80.2–92.3Priority evidence range
Evidence through Oct 22, 2026, 6:07 PM UTC

As of Oct 22, 2026

Normalized restatement

A remote code execution vulnerability exists within multiple subsystems of Drupal 7.x and 8.x. This potentially allows attackers to exploit multiple attack vectors on a Drupal site, which could result in the site being compromised. This vulnerability is related to Drupal core - Highly critical - Remote Code Execution - SA-CORE-2018-002. Both SA-CORE-2018-002 and this vulnerability are being exploited in the wild.

State
PUBLISHED
Published
Jul 19, 2018
Updated
Oct 1, 2026
Evidence coverage
72%

Evidence chronology

What was known when

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  1. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: Drupal Core Remote Code Execution Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Drupal Core Remote Code Execution Vulnerability
    Original evidence ↗
  2. 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 ↗
  3. Source dateSource date omittedFirst observed by CASCA
    CVE Program

    Record text: CVE Program Container

    Inspect raw assertion
    Field
    container
    Value
    CVE Program Container
    Original evidence ↗
  4. Source dateSource date omittedFirst observed by CASCA
    drupal

    Record text: Drupal core - Highly critical - Remote Code Execution - SA-CORE-2018-004

    Inspect raw assertion
    Field
    container
    Value
    Drupal core - Highly critical - Remote Code Execution - SA-CORE-2018-004
    Original evidence ↗
  5. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 99.17% probability · 99.94th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.991720000000; percentile 0.999350000000
    Original evidence ↗

Assessments differ

NVD9.8CVSS 3.1 · source date omitted
NVD7.5CVSS 2.0 · source date omitted
CVE Program source8.1CVSS 3.1 · source date omitted

Values are shown separately by source and CVSS version.

ExploitationCatalog member

CISA KEV · catalog date Apr 13, 2022 · first observed Sep 1, 2026

Exploit likelihood99.17%

FIRST EPSS · score date Oct 21, 2026 · 99.9th percentile · first observed Oct 21, 2026

SeverityAssessments differ

NVD · CVSS 3.1 · first observed Oct 2, 2026 · values shown separately below

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 assessmentAssessments differ

Eligible assertions materially conflict and remain visible side by side.

Revision
casca-direct-cvss-eligibility-v1
Cutoff
Oct 22, 2026
Resolution
Resolve conflict
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

Drupal Core Remote Code Execution Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
Drupal Core Remote Code Execution Vulnerability
Source dateFirst 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 ↗
CVE ProgramDerivative copy
Record text

CVE Program Container

Inspect raw assertion
Field
container
Value
CVE Program Container
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
drupalOriginal assertion
Record text

Drupal core - Highly critical - Remote Code Execution - SA-CORE-2018-004

Inspect raw assertion
Field
container
Value
Drupal core - Highly critical - Remote Code Execution - SA-CORE-2018-004
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

99.17% probability · 99.94th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.991720000000; percentile 0.999350000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
6Underlying assertions
2Canonical products
6Target assertions
0Constraint assertions

Grouped from 2 configuration nodes in this exact snapshot. Visual grouping is navigational; asset exposure and root cause require cited evidence.

Identity source boundaries
  • Cpe dictionary1,775,266 records · observed through 2026-07-21T06:45:29.809Z27d65b0f-b718-4b4f-bb79-c47c68d09dfa
  • Cpe match643,502 records · observed through 2026-07-21T08:13:17.697Z955dae73-7302-438b-aee1-058d7cc5d48e

3 scope groups

drupal · source assertedDrupalcoreDirect source scope
Affected: unspecified to before 7.59 (custom comparison)Affected: unspecified to before 8.5.3 (custom comparison)Affected: unspecified to before 8.4.8 (custom comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "unspecified", "lessThan": "7.59", "versionType": "custom"}, {"status": "affected", "version": "unspecified", "lessThan": "8.5.3", "versionType": "custom"}, {"status": "affected", "version": "unspecified", "lessThan": "8.4.8", "versionType": "custom"}]
NVD CPE · OPERATING SYSTEMdebiandebian_linuxVulnerable target · 3 assertions
Version 7.0; Version 8.0; Version 9.0Canonical identity product-3ccb4bc87dfae98fa2f2a06435fe5b3d9be78572fb958a89f2d7a96b4066447eLinked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    16f59a04-14cf-49e2-9973-645477ea09da
  2. cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 2
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    deece5fc-cacf-4496-a3e7-164736409252
  3. cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    c11e6fb0-c8c0-4527-9aa0-cb9b316f8f43
NVD CPE · APPLICATIONdrupaldrupalVulnerable target · 3 assertions
Any version (unconstrained) (>= 7.0, < 7.59); Any version (unconstrained) (>= 8.4.0, < 8.4.8); Any version (unconstrained) (>= 8.5.0, < 8.5.3)Canonical identity product-212d47c5af963e5c3aa6b05f4c9bed84d410f1ed5651403daaf3aa19bbcf8d60Linked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 1
    Logic
    OR
    Version bounds
    from including 8.4.0; through excluding 8.4.8
    Match ID
    f9fb5897-287c-4442-9a52-05285e9118f6
  2. cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    from including 7.0; through excluding 7.59
    Match ID
    3074c5bc-7b3a-411d-8b83-be17f984adf0
  3. cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 2
    Logic
    OR
    Version bounds
    from including 8.5.0; through excluding 8.5.3
    Match ID
    bc25b698-8d90-4e47-962d-d9a2d80049a6

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
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
c0bffca9-05b6-4957-8289-6007d6c86505
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
6
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
10b11530-f2be-4be6-b8a8-122a129251526dbc51a4-1298-473f-9de7-6fc40535928187be376e-80a0-4cfe-a566-644d1c496534b172cb13-62ef-4c33-9670-ff57f6663bf7e69aa6d2-1a6f-4c79-b051-6498661626daf1865c7a-0cb3-434e-a7f3-d9d315a7b817

Assessments

CVSS by origin

9.8
NVDCVSS 3.1 · role Primary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5
NVDCVSS 2.0 · role Primary · priority eligiblevalid_matchAV:N/AC:L/Au:N/C:P/I:P/A:P
8.1
CVE Program sourceCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1
CISA-ADPCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Direct CVE/CNA normalized decisions

8.1Priority eligible

CISA-ADP

CVSS 3.1 · Secondary · Independent enrichment · rank 2

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Validation
Valid match
Recomputed
8.1
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.