CVE-2025-6926

HIGH

Improper Authentication vulnerability in Wikimedia Foundation Mediawiki - CentralAuth Extension allows : Bypass Authentication.This issue affects Mediawiki - CentralAuth Extension: from 1.39.X befo...

Affects 0 products across 3 vendors.

BCS6.29
CVSS 3.18.8
EPSS0.4%
Percentile30th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, no authentication required, requires user interaction, impact contained to the vulnerable component, full confidentiality impact, full integrity impact, full availability impact.
CWE Weakness Definitions
CWE-287: Improper Authentication

Software does not prove or insufficiently proves that the user is who they claim to be.

Related Attack Patterns (CAPEC)
CAPEC-57 Utilizing REST's Trust in the System Resource to Obtain Sensitive Data
via CWE-287
CAPEC-633 Token Impersonation
via CWE-287
CAPEC-650 Upload a Web Shell to a Web Server
via CWE-287
CAPEC-194 Fake the Source of Data
via CWE-287
CAPEC-593 Session Hijacking
via CWE-287
Show all 10

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ SAGE Intelligence — CITED Relevance Research Team

Improper Authentication vulnerability in Wikimedia Foundation Mediawiki - CentralAuth Extension allows bypassing authentication, affecting specific versions of the extension.

BSID: BS-2025-GLOBAL-031914-H • Model: /workspace/models/qwen2.5-coder-32b-instruct-bf16 • Confidence: HIGH

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Frequently Asked Questions
What is CVE-2025-6926?
Improper Authentication vulnerability in Wikimedia Foundation Mediawiki - CentralAuth Extension allows bypassing authentication, affecting specific versions of the extension.
What is the CVSS score for CVE-2025-6926?
CVE-2025-6926 has CVSS 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS: 0.4%.
Is CVE-2025-6926 actively exploited?
No confirmed active exploitation of CVE-2025-6926 as of 2026-05-30.
How do I remediate CVE-2025-6926?
Priority: IMMEDIATE.
What systems are affected by CVE-2025-6926?
CVE-2025-6926 affects: Foundation, Mediawiki, Wikimedia.
Vulnerability Details
CVE IDCVE-2025-6926
BSIDBS-2025-GLOBAL-031914-H BreachSpider Global ID
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published2025-07-03
Last Modified2026-04-15
ICS Relevance15%
Weakness (CWE)
Improper Authentication
SourceNVD
Official Description

Improper Authentication vulnerability in Wikimedia Foundation Mediawiki - CentralAuth Extension allows : Bypass Authentication.This issue affects Mediawiki - CentralAuth Extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

An attacker can exploit this vulnerability to bypass authentication mechanisms in the CentralAuth Extension of Mediawiki, potentially gaining unauthorized access to user accounts and data.

Exploitation Likelihood: HIGH

Affected Products
VendorProductFixed Version
Foundation — —
Mediawiki — —
Wikimedia — —
Remediation

No patch URL on record. Monitor vendor security advisories directly.

Threat Intelligence
● Threat Intelligence Validated: July 2026 | Threat Age: 387 Days
CISA KEVNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
SAGE Enrichment Record — provenance & audit hash
Model/workspace/models/qwen2.5-coder-32b-instruct-bf16
ConfidenceHIGH
Enriched At2026-05-24
SHA-512 Audit Hashd7325fe8e9b255c0d5897aa08a19cf2a5c0d86c8f17d4cc40119878c7aaa525404e0bf8af80c043f6d6743168d8dc42735cfa3e6587dd8652e43962fc8faff59
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