CVE-2025-12716

HIGH 8.7

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

CVSS Score

8.7

EPSS Score

0.0%

EPSS Percentile

0th

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.4 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that, under certain conditions could have allowed an authenticated user to perform unauthorized actions on behalf of another user by creating wiki pages with malicious content.

CWE	CWE-79
Vendor	gitlab
Product	gitlab
Ecosystems	DevTools
Industries	Technology
Published	Dec 11, 2025
Last Updated	Feb 26, 2026

Stay Ahead of the Next One

Get instant alerts for gitlab gitlab

Be the first to know when new high vulnerabilities affecting gitlab gitlab are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

GitLab / GitLab

18.4 < 18.4.6 18.5 < 18.5.4 18.6 < 18.6.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

gitlab.com: https://gitlab.com/gitlab-org/gitlab/-/issues/579548 hackerone.com: https://hackerone.com/reports/3405832 about.gitlab.com: https://about.gitlab.com/releases/2025/12/10/patch-release-gitlab-18-6-2-released/

Credits

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