CVE-2025-5315: gitlab Auth Bypass (CVSS 4.3)

Description

An issue has been discovered in GitLab CE/EE affecting all versions from 17.2 before 17.11.5, 18.0 before 18.0.3, and 18.1 before 18.1.1 that could have allowed authenticated users with Guest role permissions to add child items to incident work items by sending crafted API requests that bypassed UI-enforced role restrictions.

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CVSS v3.1 Score

4.3

MEDIUM

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

Weakness Type (CWE)

CWE-862 Missing Authorization

Affected Products

Vendor	Product	Versions
gitlab	gitlab	17.2.0 — 17.11.5
gitlab	gitlab	17.2.0 — 17.11.5
gitlab	gitlab	18.0.0 — 18.0.3
gitlab	gitlab	18.0.0 — 18.0.3
gitlab	gitlab	All
gitlab	gitlab	All

References

Other References

https://gitlab.com/gitlab-org/gitlab/-/issues/546282 https://hackerone.com/reports/3163037

Frequently Asked Questions

What is CVE-2025-5315? +

An issue has been discovered in GitLab CE/EE affecting all versions from 17.2 before 17.11.5, 18.0 before 18.0.3, and 18.1 before 18.1.1 that could have allowed authenticated users with Guest role permissions to add child items to incident work items by sending crafted API requests that bypassed UI-enforced role restrictions. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2025-5315? +

CVE-2025-5315 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-5315? +

CVE-2025-5315 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-2025-5315? +

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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