Medium severity · published Nov 15, 2025
CVE-2025-12983
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…
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 39% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GI
GitLab · GitLab
16.9.0 before 18.3.6; 16.9.0 before 18.3.6; 18.4.0 before 18.4.4; 18.4.0 before 18.4.4; 18.5.0 before 18.5.2; 18.5.0 before 18.5.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-12983
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-12983
Release Notes
https://about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released/
Broken Link
https://gitlab.com/gitlab-org/gitlab/-/issues/296257
Permissions Required
https://hackerone.com/reports/3419588
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