CVE-2025-12983CWE-789

CVE-2025-12983

Low · published November 15, 2025

CVSS v3.1
3.5
EPSS
0%
Percentile
38.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
3.5 · LOW
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00449 · 38.0th percentile
Weakness
CWE-789 · Memory Allocation with Excessive Size Value
Published
2025-11-15T14:15Z
Affected products (6)
ProductVersionsFixed in
gitlab/gitlab≥ 16.9.0, < 18.3.618.3.6
gitlab/gitlab≥ 16.9.0, < 18.3.618.3.6
gitlab/gitlab≥ 18.4.0, < 18.4.418.4.4
gitlab/gitlab≥ 18.4.0, < 18.4.418.4.4
gitlab/gitlab≥ 18.5.0, < 18.5.218.5.2
gitlab/gitlab≥ 18.5.0, < 18.5.218.5.2
References (3)
https://about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released/ · [email protected]https://gitlab.com/gitlab-org/gitlab/-/issues/296257 · [email protected]https://hackerone.com/reports/3419588 · [email protected]
EPSS history
Timeline
  • 15 NOV 08:13Z
    Memory Allocation with Excessive Size Value in GitLab
    cvelistv5