Dashboard / CVE-2025-8405

CVE-2025-8405

HIGH
MEDIUM Priority: 0.04 BB Relevance: 46/100
Published: 2025-12-11 Modified: 2026-11-04 First seen: 2026-11-03 Status: active

Attack Surface

Network Conf. Impact Integ. Impact Scope Change

CVSS Vector Breakdown

AV: Network
AC: High
PR: Low
UI: Required
S: Changed
C: High
I: High
A: None

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.

Weakness Classification (1)

Affected Software (6)

VendorProductVersion
GitLab GitLab 17.1 < 18.4.6
GitLab GitLab 18.5 < 18.5.4
GitLab GitLab 18.6 < 18.6.2
GitLab GitLab 17.1 < 18.4.6
GitLab GitLab 18.5 < 18.5.4
GitLab GitLab 18.6 < 18.6.2

References & Advisories (3)

https://hackerone.com/reports/3270940
technical-description exploit permissions-required
https://gitlab.com/gitlab-org/gitlab/-/issues/558214
issue-tracking permissions-required

Bug Bounty Relevance

46 / 100
✓ Network accessible

CVSS Score

7.7 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N

EPSS — Exploitation Probability

0.52%
Raw Score 0.005150
Percentile 43.9%
Date 2026-11-03

Intelligence Sources

mitre ref →

External Links