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.

CVSS 3.1

3.5CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N

EPSS

0.3% chance of exploitation in the next 30 days; higher than 20% of CVEs (scores of 2026-10-25)

CWE

CWE-77

Published

2025-11-15

Modified

2026-10-19

Record from

the NVD, synced 2026-10-19

Affected

• gitlab:gitlab

References

• https://about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released/
• https://gitlab.com/gitlab-org/gitlab/-/issues/552611
• https://hackerone.com/reports/3173458

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