CVE-2025-11224

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 15.10 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated user to execute stored cross-site scripting through improper input validation in the Kubernetes proxy functionality.

Affected

GitLab

CVSS v3.1 NVD

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

CVSS v3.1 GITLAB

7.7 HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N

EPSS

0.33% chance of exploitation in the next 30 days, 25th percentile

Published

2026-01-14

Updated

2026-02-26

Proof-of-concept exploits (1)

• https://hackerone.com/reports/3277291

Security advisories

• https://about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released
• https://gitlab.com/gitlab-org/gitlab/-/issues/573223

References

• CVE Record
• NVD entry