Read the docs
TI-2015-02594 Aliases CVE-2015-2940GHSA-g77q-mpv6-8w22

Cross-site request forgery (CSRF) vulnerability in the CheckUser extension for MediaWiki…

Priority LOW 32CWE-352Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Medium
Impact type
Tampering
Confidentiality · integrity · availability
Partial · Partial · Partial
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-352.

Summary

Cross-site request forgery (CSRF) vulnerability in the CheckUser extension for MediaWiki allows remote attackers to hijack the authentication of certain users for requests that retrieve sensitive user information via unspecified vectors.

Why it matters now

EPSS 0.01095 65th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:mediawiki:checkuser:-:*:*:*:*:mediawiki:*:*not specified by NVDVulnerablemediawiki
  • cpe:2.3:a:mediawiki:checkuser:-:*:*:*:*:mediawiki:*:* Versions not specified by NVD Vulnerable ·mediawiki

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2015-2940
  2. 2026-10-03 Alias added: GHSA-g77q-mpv6-8w22

References

Patch 1

Advisory 2

Other 3

  • TI-2019-13460 An issue was discovered in the CheckUser extension through 1.34 for MediaWiki. CVSS 3.1MEDIUM 6.5
  • TI-2019-12392 An issue was discovered in the CheckUser extension through 1.35.0 for MediaWiki. CVSS 3.1MEDIUM 5.3
  • TI-2026-26412 Suggested investigations: Handle suppressed usernames CVSS 4.0MEDIUM 4.8
  • TI-2025-41237 Wrong E-Mail address composition for usernames with a comma and Umlauts in it like "Döe, Jähn" CVSS 4.0N/A 0.0
  • TI-2025-38092 Special:GlobalContributions shows edits on wikis the viewer doesn't have access to CVSS 4.0LOW 1.3
  • TI-2025-38085 i18n XSS through Special:CheckUser CheckUser helper CVSS 4.0N/A 0.0
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences