CVE-2025-12669
Improper Control of Generation of Code ('Code Injection') in GitLab
5.4CVSSMEDIUM
Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.11 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an authenticated user to inject HTML and JavaScript into email notifications sent to other users due to improper input sanitization.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:LPrivileges RequiredLow
UI:RUser InteractionRequired
Scope
S:CScopeChanged
Impact
C:LConfidentialityLow
I:LIntegrityLow
A:NAvailabilityNone
Weaknesses
Affected Products
Attack Graph
Products CVE Techniques Tactics
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Exploitability
Official Patch Available
MITRE ATT&CK
2 techniques Execution
Initial Access
References
https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/
about.gitlab.com
https://gitlab.com/gitlab-org/gitlab/-/work_items/579385
gitlab.com
https://hackerone.com/reports/3368096
hackerone.com
and 1 more references View all →
Timeline
Published
May 14, 2026
Last Updated
May 16, 2026
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