CVE-2025-6945

Description

GitLab has remediated an issue in GitLab EE affecting all versions from 17.8 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated attacker to leak sensitive information from confidential issues by injecting hidden prompts into merge request comments.

CVSS v3.1 Score

3.5

LOW

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

Weakness Type (CWE)

CWE-77 CWE-77

Affected Products

Vendor	Product	Versions
gitlab	gitlab	17.9.0 — 18.3.6
gitlab	gitlab	18.4.0 — 18.4.4
gitlab	gitlab	18.5.0 — 18.5.2

References

Advisories & Patches

https://about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released/

Other References

https://gitlab.com/gitlab-org/gitlab/-/issues/552611 https://hackerone.com/reports/3173458

Frequently Asked Questions

What is CVE-2025-6945? +

GitLab has remediated an issue in GitLab EE affecting all versions from 17.8 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated attacker to leak sensitive information from confidential issues by injecting hidden prompts into merge request comments. It has a CVSS v3.1 base score of 3.5 (LOW).

How severe is CVE-2025-6945? +

CVE-2025-6945 has a CVSS v3.1 score of 3.5 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2025-6945? +

CVE-2025-6945 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-2025-6945? +

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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