UpHeron
All vulnerabilities

Servers and applications

CVE-2023-45367

An issue was discovered in the CheckUser extension for MediaWiki before 1.35.12, 1.36.x through 1.39.x before 1.39.5, and 1.40.x before 1.40.1. A user can use a rest.php/checkuser/v0/useragent-clienthints/revision/ URL to store an arbitrary number of rows in cu_useragent_clienthints, leading to a denial of service.

Severity
Medium 6.5
Published
9 Oct 2023
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
1.35.12, 1.39.5
Sources
NVD

Affected software

SoftwareAffected versions
MediaWikiServers and applications · cpe:a:mediawiki:mediawiki
  • Every version before 1.35.12
  • From 1.36.0 before 1.39.5
  • Version 1.40.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-45367
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-45367