Server-Side Request Forgery (SSRF) in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2026-12635

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Main Vulnerability Database Vulnerabilities #VU135184

Server-Side Request Forgery (SSRF) in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2026-12635

Published: June 25, 2026


Vulnerability identifier: #VU135184
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-12635
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: GitLab, Inc
Affected software:
Gitlab Community Edition
GitLab Enterprise Edition

Detailed vulnerability description

The vulnerability allows a remote user to make requests to internal network resources.

The vulnerability exists due to improper url validation in repository mirroring when performing mirror synchronization. A remote user can supply a crafted mirror url to make requests to internal network resources.

The issue is triggered through mirror synchronization.


How to mitigate CVE-2026-12635

Install security update from vendor's website.

Sources