What’s Vulnerable › Vulnerabilities

CVE-2025-12716: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

• Severity: high (CVSS 8.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-11 · updated 2026-10-14
• Weakness: CWE-79

Description

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.

Affected products

• GitLab: from 18.4.0 before 18.4.6; from 18.5.0 before 18.5.4; from 18.6.0 before 18.6.2 — fixed in 18.4.6, 18.5.4, 18.6.2

How to fix

Upgrade to a fixed version: GitLab 18.4.6, 18.5.4, 18.6.2. Check the vendor advisory for mitigations.

References

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

Get alerted when CVE-2025-12716 or the next vulnerability affects your stack