What’s Vulnerable › Vulnerabilities

CVE-2025-12506: Use of Incorrectly-Resolved Name or Reference in GitLab

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-08 · updated 2026-09-29
• Weakness: CWE-706

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.5 before 18.11.7, 19.0 before 19.0.4, and 19.1 before 19.1.2 that under certain conditions could have allowed an authenticated user to create a repository where the content displayed in the web interface differed from the content available for download, due to improper handling of Git reference name resolution.

Affected products

• GitLab: from 16.5.0 before 18.11.7; from 19.0.0 before 19.0.4; from 19.1.0 before 19.1.2 — fixed in 18.11.7, 19.0.4, 19.1.2

How to fix

Upgrade to a fixed version: GitLab 18.11.7, 19.0.4, 19.1.2. Check the vendor advisory for mitigations.

References

• https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-1-2-released/
• https://gitlab.com/gitlab-org/gitlab/-/work_items/578988
• https://hackerone.com/reports/3351460

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