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CVE-2025-12734

Improper Encoding or Escaping of Output in GitLab

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 18.4.6, 18.5.4, 18.6.2
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.6 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have allowed an authenticated user to, under certain conditions, render content in dialogs to other users by injecting malicious HTML content into merge request titles.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • GitLab GitLab

    From 15.6 · fixed in 18.4.6; From 18.5 · fixed in 18.5.4; From 18.6 · fixed in 18.6.2

References 3

gitlab.com

hackerone.com

about.gitlab.com