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CVE-2026-5262

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 18.9.6, 18.10.4, 18.11.1
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.1.0 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that under certain conditions could have allowed an unauthenticated user to access tokens in the Storybook development environment due to improper input validation.

Timeline

  1. CVE published
  2. CISA SSVC assessment

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

  3. Record last updated

Affected versions

  • GitLab GitLab

    From 16.1.0 · fixed in 18.9.6; From 18.10 · fixed in 18.10.4; From 18.11 · fixed in 18.11.1

References 3

gitlab.com

hackerone.com

about.gitlab.com