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 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 v3 7.7 HIGH

7.7^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.3 / Impact : 5.8

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://about.gitlab.com/releases/2025/12/10/patch-release-gitlab-18-6-2-released/	Release Notes Vendor Advisory
https://gitlab.com/gitlab-org/gitlab/-/issues/558214	Broken Link
https://hackerone.com/reports/3270940	Permissions Required

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:gitlab:gitlab:::::community:::*
	cpe:2.3:a:gitlab:gitlab:::::enterprise:::*
	cpe:2.3:a:gitlab:gitlab:::::community:::*
	cpe:2.3:a:gitlab:gitlab:::::enterprise:::*
	cpe:2.3:a:gitlab:gitlab:::::community:::*
	cpe:2.3:a:gitlab:gitlab:::::enterprise:::*

History

23 Dec 2025, 21:01

Type	Values Removed	Values Added
CPE		cpe:2.3:a:gitlab:gitlab:::::enterprise:::* cpe:2.3:a:gitlab:gitlab:::::community:::*
First Time		Gitlab Gitlab gitlab
References	~~() https://about.gitlab.com/releases/2025/12/10/patch-release-gitlab-18-6-2-released/ -~~	() https://about.gitlab.com/releases/2025/12/10/patch-release-gitlab-18-6-2-released/ - Release Notes, Vendor Advisory
References	~~() https://gitlab.com/gitlab-org/gitlab/-/issues/558214 -~~	() https://gitlab.com/gitlab-org/gitlab/-/issues/558214 - Broken Link
References	~~() https://hackerone.com/reports/3270940 -~~	() https://hackerone.com/reports/3270940 - Permissions Required

16 Dec 2025, 11:15

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~8.7~~	v2 : unknown v3 : 7.7

11 Dec 2025, 05:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-12-11 05:16

Updated : 2025-12-23 21:01

NVD link : CVE-2025-8405

Mitre link : CVE-2025-8405

CVE.ORG link : CVE-2025-8405

JSON object : View

Products Affected

gitlab

gitlab

CWE

CWE-116

Improper Encoding or Escaping of Output

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