CVE-2026-6073

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

State: Published
Severity: 8.7 High
Published: May 14, 2026
Updated: May 15, 2026
Reserved: Apr 10, 2026

Description

GitLab has remediated an issue in GitLab EE affecting all versions from 18.7 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an authenticated user to execute arbitrary JavaScript in other users' browsers due to improper input sanitization.

Scores

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

Weaknesses

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

Affected Products

Product	Versions
GitLabGitLab	18.7 to before 18.9.7Affected 18.10 to before 18.10.6Affected 18.11 to before 18.11.3Affected

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/596340
HackerOne Bug Bounty Report #3655677technical-descriptionexploitpermissions-required
https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/

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