CVE-2025-11340: gitlab Auth Bypass — Fix

Description

GitLab has remediated an issue in GitLab EE affecting all versions from 18.3 to 18.3.4, 18.4 to 18.4.2 that, under certain conditions, could have allowed authenticated users with read-only API tokens to perform unauthorized write operations on vulnerability records by exploiting incorrectly scoped GraphQL mutations.

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CVSS v3.1 Score

7.7

HIGH

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

Weakness Type (CWE)

CWE-863 Incorrect Authorization

Affected Products

Vendor	Product	Versions
gitlab	gitlab	18.3.0 — 18.3.4
gitlab	gitlab	18.3.0 — 18.3.4
gitlab	gitlab	18.4.0 — 18.4.2
gitlab	gitlab	18.4.0 — 18.4.2

References

Advisories & Patches

https://about.gitlab.com/releases/2025/10/08/patch-release-gitlab-18-4-2-released/

Other References

https://gitlab.com/gitlab-org/gitlab/-/issues/567847

Frequently Asked Questions

What is CVE-2025-11340? +

GitLab has remediated an issue in GitLab EE affecting all versions from 18.3 to 18.3.4, 18.4 to 18.4.2 that, under certain conditions, could have allowed authenticated users with read-only API tokens to perform unauthorized write operations on vulnerability records by exploiting incorrectly scoped GraphQL mutations. It has a CVSS v3.1 base score of 7.7 (HIGH).

How severe is CVE-2025-11340? +

CVE-2025-11340 has a CVSS v3.1 score of 7.7 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-11340? +

CVE-2025-11340 affects products from gitlab, specifically: gitlab. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-11340? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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