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CVE-2025-62699VulnerabilityPublished

CVE-2025-62699: The Wikimedia Foundation Mediawiki – Translate Extension · Information Exposure

Affects The Wikimedia Foundation Mediawiki – Translate ExtensionSource CVE Database V5

0

Not known to be exploited · CVSS 6.9 Medium : upgrade to 1.39 when convenient.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 4.0 base score
6.9Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 30% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.39
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 Oct 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

Upgrade The Wikimedia Foundation Mediawiki – Translate Extension to 1.39.

Affected software

ProductAffectedFixed in
The Wikimedia Foundation Mediawiki - Translate ExtensionAffected
  • <1.39
Fixed in
  • 1.39

AI-suggested

To mitigate CVE-2025-62699, European organizations should immediately upgrade the Mediawiki CheckUser Extension to version 1.39 or later, where the vulnerability is resolved. If upgrading is not immediately feasible, restrict access to the CheckUser Extension by implementing strict access controls such as IP whitelisting, VPN-only access, or role-based permissions limiting who can query CheckUser data. Monitor Mediawiki logs for unusual or unauthorized access attempts to the CheckUser functionality. Conduct regular audits of user permissions and ensure that only trusted administrators have CheckUser privileges. Additionally, consider network segmentation to isolate Mediawiki servers from public-facing networks where possible. Organizations should also review their data exposure policies and ensure that sensitive user information is minimized within the platform. Finally, stay informed about any emerging exploits or patches related to this vulnerability by subscribing to Wikimedia Foundation security advisories and relevant threat intelligence feeds.

Description

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in The Wikimedia Foundation Mediawiki - Translate Extension allows Footprinting. Translate extension appears to use jobs to make edits to translation pages. This causes the CheckUser tool to log the wrong IP and User-Agent making these edits un-auditable via the CheckUser tool.This issue affects Mediawiki - Translate Extension: from master before 1.39.

References

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