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Vulnerability details: VCID-h3d2-nr9e-nqbk
Vulnerability ID VCID-h3d2-nr9e-nqbk
Aliases CVE-2025-6926
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 5.3
Risk 2.6
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-287 Improper Authentication
System Score Found at
epss 0.00083 https://api.first.org/data/v1/epss?cve=CVE-2025-6926
epss 0.00083 https://api.first.org/data/v1/epss?cve=CVE-2025-6926
epss 0.00083 https://api.first.org/data/v1/epss?cve=CVE-2025-6926
epss 0.00083 https://api.first.org/data/v1/epss?cve=CVE-2025-6926
epss 0.00083 https://api.first.org/data/v1/epss?cve=CVE-2025-6926
epss 0.00083 https://api.first.org/data/v1/epss?cve=CVE-2025-6926
epss 0.00083 https://api.first.org/data/v1/epss?cve=CVE-2025-6926
epss 0.00083 https://api.first.org/data/v1/epss?cve=CVE-2025-6926
epss 0.00083 https://api.first.org/data/v1/epss?cve=CVE-2025-6926
epss 0.00083 https://api.first.org/data/v1/epss?cve=CVE-2025-6926
epss 0.0009 https://api.first.org/data/v1/epss?cve=CVE-2025-6926
epss 0.0009 https://api.first.org/data/v1/epss?cve=CVE-2025-6926
epss 0.0009 https://api.first.org/data/v1/epss?cve=CVE-2025-6926
epss 0.00273 https://api.first.org/data/v1/epss?cve=CVE-2025-6926
cvssv3.1 8.8 https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1165117
ssvc Track https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1165117
cvssv3.1 8.8 https://phabricator.wikimedia.org/T389010
ssvc Track https://phabricator.wikimedia.org/T389010
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2025-6926
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-6926
1165117 https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1165117
T389010 https://phabricator.wikimedia.org/T389010
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1165117
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2025-07-03T17:40:14Z/ Found at https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1165117
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://phabricator.wikimedia.org/T389010
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2025-07-03T17:40:14Z/ Found at https://phabricator.wikimedia.org/T389010
Exploit Prediction Scoring System (EPSS)
Percentile 0.24479
EPSS Score 0.00083
Published At April 2, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T16:39:12.334571+00:00 Debian Oval Importer Import https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.0.0