6.9

CVE-2025-62661: the wikimedia foundation mediawiki - thanks extension, mediawiki - growth experiments extension Incorrect Default Permissions

CVSS: 6.9v4.0MediumDeferred
Published 21-10-2025Last modified 21-10-2025
Open JSON

Vulnerability summary

CVE-2025-62661 is a medium (CVSS 6.9) Incorrect Default Permissions vulnerability in the wikimedia foundation mediawiki - thanks extension, mediawiki - growth experiments extension. EPSS estimates a 0.35% chance of exploitation in the next 30 days, higher than 27.5% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.9/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.35%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 21-10-2025
    PublishedVulnerability first disclosed.
  2. 21-10-2025
    Last modifiedVulnerability information updated.

Description

Incorrect Default Permissions vulnerability in The Wikimedia Foundation Mediawiki - Thanks Extension, Mediawiki - Growth Experiments Extension allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects Mediawiki - Thanks Extension, Mediawiki - Growth Experiments Extension: from 1.43 before 1.44.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.35%

Chance of exploitation in the next 30 days

Percentile

28%

Versus all other CVEs

30-day change

0.00 pp

From 0.35% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.35%

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

The wikimedia foundation1 product

1 vendor · 1 product

References

3 links