CVE-2026-3093

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

State: Published
Severity: 4.7 Medium
Published: Jul 29, 2026
Updated: Jul 29, 2026
Reserved: Feb 24, 2026

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 14.0 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an attacker to execute arbitrary JavaScript in another user's browser via a crafted URL, due to improper sanitization of user-controlled input.

Scores

CVSS	Score	Vector	Source
3.1	4.7 Medium	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N	GitLab

Weaknesses

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

Affected Products

Product	Versions
GitLabGitLab	14.0 to before 19.0.5Affected 19.1 to before 19.1.3Affected 19.2 to before 19.2.1Affected

References

HackerOne Bug Bounty Report #3539833technical-descriptionexploitpermissions-required
https://gitlab.com/gitlab-org/gitlab/-/work_items/591274
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-1-released/

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