CVE-2026-92883 PUBLISHED

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

Assigner: GitLab
Reserved: 17.09.2026 Published: 13.10.2026 Updated: 13.10.2026

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.1 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user to execute arbitrary JavaScript in the context of other users' browser sessions via a specially crafted repository, due to improper sanitization of HTML attributes in syntax-highlighted output.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
CVSS Score: 8.7

Product Status

Vendor GitLab
Product GitLab
Versions Default: unaffected
  • affected from 19.1 to 19.2.8 (excl.)
  • affected from 19.3 to 19.3.5 (excl.)
  • affected from 19.4 to 19.4.2 (excl.)

Solutions

Upgrade to versions 19.2.8, 19.3.5, 19.4.2 or above.

Credits

  • Thanks [a0xnirudh](https://hackerone.com/a0xnirudh) for reporting this vulnerability through our HackerOne bug bounty program finder

References

Problem Types

  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE