CVE-2026-3093

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

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.

Affected

GitLab

CVSS v3.1 GITLAB

4.7 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS

0.29% chance of exploitation in the next 30 days, 20th percentile

Published

2026-07-29

Proof-of-concept exploits (1)

• https://hackerone.com/reports/3539833

Security advisories

• https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-1-released

References

• CVE Record
• NVD entry