8.8

CVE-2025-6926: wikimedia foundation mediawiki - centralauth extension Improper Authentication

CVSS: 8.8v3.1HighDeferred
AliasesUBUNTU-CVE-2025-6926DEBIAN-CVE-2025-6926
Published 03-07-2025Last modified 03-11-2025
Open JSON

Vulnerability summary

CVE-2025-6926 is a high (CVSS 8.8) Improper Authentication vulnerability in wikimedia foundation mediawiki - centralauth extension. EPSS estimates a 0.45% chance of exploitation in the next 30 days, higher than 37.9% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.45%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2
DLA-4249-1DSA-5957-1

Timeline

  1. 03-07-2025
    PublishedVulnerability first disclosed.
  2. 03-11-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.45%

Chance of exploitation in the next 30 days

Percentile

38%

Versus all other CVEs

30-day change

+0.04 pp

From 0.41% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.45%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • mediawiki< 1:1.39.13-1~deb12u1 | < 1:1.43.3+dfsg-1
Ubuntu1 product
  • mediawikiAll versions (No fix recorded)
Wikimedia foundation1 product

3 vendors · 3 products

References

9 links