CVE-2025-8405 — Improper Encoding or Escaping of Output in Gitlab

CWE-116 — Improper Encoding or Escaping of Output6 documents6 sources
Severity
7.7HIGHNVD
EPSS
0.0%
top 96.64%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
GitlabDebian GitlabGitlab CE
Timeline
PublishedDec 11

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.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:NExploitability: 1.3 | Impact: 5.8

Affected Packages5 packages

▶CVEListV5gitlab/gitlab17.1 — 18.4.6+2
▶NVDgitlab/gitlab17.1.0 — 18.4.6+2
▶debiandebian/gitlab
▶gitlabgitlab/gitlab

🔴Vulnerability Details

2
OSV
CVE-2025-8405: GitLab has remediated a security issue in GitLab CE/EE affecting all versions from 17↗2025-12-11
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GHSA
GHSA-fjj2-x466-w3hx: GitLab has remediated a security issue in GitLab CE/EE affecting all versions from 17↗2025-12-11
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📋Vendor Advisories

2
GitLab
CVE-2025-8405: 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↗2025-12-11
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Debian
CVE-2025-8405: gitlab - GitLab has remediated a security issue in GitLab CE/EE affecting all versions fr...↗2025
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🕵️Threat Intelligence

1
Wiz
CVE-2025-8405 Impact, Exploitability, and Mitigation Steps | Wiz↗
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