CVE-2025-8405

high

Description

GitLab has remediated a security issue in GitLab CE/EE affecting all versions from 17.1 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have allowed an authenticated user to perform unauthorized actions on behalf of other users by injecting malicious HTML into vulnerability code flow displays.

References

https://about.gitlab.com/releases/2025/12/10/patch-release-gitlab-18-6-2-released/

https://hackerone.com/reports/3270940

https://gitlab.com/gitlab-org/gitlab/-/issues/558214

Details

Source: Mitre, NVD

Published: 2025-12-11

Updated: 2025-12-23

Risk Information

CVSS v2

Base Score: 8.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 7.7

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

Severity: High

EPSS

EPSS: 0.0001