CVE-2025-12983
November 15, 2025
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated attacker to cause a denial of service condition by submitting specially crafted markdown content with nested formatting patterns.
Affected Packages
https://gitlab.com/gitlab-org/gitlab.git (SCM_GIT):
Affected version(s) >=v16.9.0-ee <v18.3.6Fix Suggestion:
Update to version v18.3.6https://gitlab.com/gitlab-org/gitlab.git (SCM_GIT):
Affected version(s) >=v18.5.0-ee <v18.5.2-eeFix Suggestion:
Update to version v18.5.2-eehttps://gitlab.com/gitlab-org/gitlab.git (SCM_GIT):
Affected version(s) >=v18.4.0-ee <v18.4.4-eeFix Suggestion:
Update to version v18.4.4-eeRelated Resources (3)
Do you need more information?
Contact UsCVSS v4
Base Score:
2.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
LOW
CVSS v3
Base Score:
3.5
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Memory Allocation with Excessive Size Value
EPSS
Base Score:
0.03
