CASCACascade Atlas

Evidence dossier

CVE-2026-87902

An unauthenticated attacker can make `get_page_template()` page-template resolution include a chosen readable local `.php` file outside the active theme directories.

Exploited in the wild (CISA KEV since Sep 25, 2026). CVE Program source reports CVSS 3.1 8.1. EPSS estimates 40.0% exploit likelihood as of Oct 22, 2026.

72.9–85.0Priority evidence range
Evidence through Oct 22, 2026, 6:07 PM UTC

As of Oct 22, 2026

Normalized restatement

An unauthenticated attacker can make `get_page_template()` page-template resolution include a chosen readable local `.php` file outside the active theme directories. If relevant pre-conditions for both the server and the active theme are met, this can lead to RCE.

State
PUBLISHED
Published
Sep 22, 2026
Updated
Sep 26, 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: WordPress Core Remote File Inclusion Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    WordPress Core Remote File Inclusion 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
    hackerone

    Record text: An unauthenticated attacker can make `get_page_template()` page-template resolution include a chosen readable local `.php` file outside the active theme directories. If relevant pre-conditions for both the server and the active theme are met, this can lead to RCE.

    Inspect raw assertion
    Field
    container
    Value
    An unauthenticated attacker can make `get_page_template()` page-template resolution include a chosen readable local `.php` file outside the active theme directories. If relevant pre-conditions for both the server and the active theme are met, this can lead to RCE.
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 39.98% probability · 98.63th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.399790000000; percentile 0.986280000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Sep 25, 2026 · first observed Sep 26, 2026

Exploit likelihood39.98%

FIRST EPSS · score date Oct 22, 2026 · 98.6th percentile · first observed Oct 22, 2026

SeverityCVSS 8.1

CVE Program source · CVSS 3.1 · first observed Sep 28, 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

WordPress Core Remote File Inclusion Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
WordPress Core Remote File Inclusion 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 ↗
hackeroneOriginal assertion
Record text

An unauthenticated attacker can make `get_page_template()` page-template resolution include a chosen readable local `.php` file outside the active theme directories. If relevant pre-conditions for both the server and the active theme are met, this can lead to RCE.

Inspect raw assertion
Field
container
Value
An unauthenticated attacker can make `get_page_template()` page-template resolution include a chosen readable local `.php` file outside the active theme directories. If relevant pre-conditions for both the server and the active theme are met, this can lead to RCE.
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

39.98% probability · 98.63th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.399790000000; percentile 0.986280000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →

26 scope groups

hackerone · source assertedWordPressWordPressDirect source scope
Affected: 0 to before 7.1.2 (semver comparison)
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "0", "lessThan": "7.1.2", "versionType": "semver"}]
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; end excluding 4.7.37
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 4.8; end excluding 4.8.32
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 5.7; end excluding 5.7.19
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 5.8; end excluding 5.8.17
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 5.9; end excluding 5.9.18
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 6.0; end excluding 6.0.16
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 6.1; end excluding 6.1.14
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 6.2; end excluding 6.2.13
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 6.3; end excluding 6.3.12
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 6.4; end excluding 6.4.12
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 6.5; end excluding 6.5.12
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 6.6; end excluding 6.6.9
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 4.9; end excluding 4.9.33
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 6.7; end excluding 6.7.9
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 6.8; end excluding 6.8.10
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 6.9; end excluding 6.9.9
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 7.0; end excluding 7.0.6
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 7.1; end excluding 7.1.2
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 5.0; end excluding 5.0.29
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 5.1; end excluding 5.1.26
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 5.2; end excluding 5.2.28
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 5.3; end excluding 5.3.25
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 5.4; end excluding 5.4.23
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*; start including 5.5; end excluding 5.5.22

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
734de118-151e-4188-b734-9c2123b67636
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
25
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
1340636e-7229-4679-a4c8-7f3f7ad3d26c14d9a3c5-e9ec-4bd2-842c-ae44b83737e81730afde-ef80-42a1-a015-f8d8f20c0233189d957b-4917-4035-9de1-8970f59b96e024c9b86a-eace-4246-a81a-15e1bc7faa1c2a198bc7-c95b-4322-9ef5-39233537d3c72c9d570d-4d8e-448d-9c11-0b789c7a697332f1aea7-5b09-49e8-b53e-c5023c0a11d03584f94b-17ad-4a54-8c92-bea2ea69a8413d32c632-a811-4fc7-b5c6-8be8a8cc9b793d6c7964-a08a-4d85-837d-ac3e414327204f18ca28-9305-4cc1-b783-e36ac7c13c7351c7bb4e-5f24-4d3b-b015-edf15ae6406b579b6732-4959-4837-947a-03a7fbfb038a6244e985-8b7b-4a4c-9cca-8658c7c22d8a69dcf9f2-8326-41a4-adac-733a61f85d5e74bbb85d-27d3-4128-bda2-7851973a9fce932ec212-1d22-4caa-8500-3d03509f291399d32276-2b9a-41d8-885b-541185776573a64156b8-3d67-4c3e-9c1b-4eac94f5d1febca4317f-22b9-4470-bd3b-72d782a271dccbde6815-46c6-43d2-bc3f-71346ebdac69df869962-bef4-41e0-985e-276a5dc77933e4333bfb-81d5-48a6-91e4-b14fcbec4b20ec76c5a0-1be4-4ece-8d88-5981cdc275bf

Assessments

CVSS by origin

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.