CVE-2025-12983
Nov. 15, 2025, 9:15 a.m.
3.5
Low
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.
Product(s) Impacted
| Vendor | Product | Versions |
|---|---|---|
| Gitlab |
|
|
Weaknesses
Common security weaknesses mapped to this vulnerability.
CWE-789
Memory Allocation with Excessive Size Value
The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.
*CPE(s)
Affected systems and software identified for this CVE.
| Type | Vendor | Product | Version | Update | Edition | Language | Software Edition | Target Software | Target Hardware | Other Information |
|---|---|---|---|---|---|---|---|---|---|---|
| a | gitlab | gitlab_ce | / | 16.9-* | / | / | / | / | / | / |
| a | gitlab | gitlab_ee | / | 16.9-* | / | / | / | / | / | / |
| a | gitlab | gitlab_ce | / | 18.4-* | / | / | / | / | / | / |
| a | gitlab | gitlab_ee | / | 18.4-* | / | / | / | / | / | / |
| a | gitlab | gitlab_ce | / | 18.5-* | / | / | / | / | / | / |
| a | gitlab | gitlab_ee | / | 18.5-* | / | / | / | / | / | / |
Tags
CVSS Score
CVSS Data - 3.1
- Attack Vector: NETWORK
- Attack Complexity: HIGH
- Privileges Required: LOW
- Scope: CHANGED
- Confidentiality Impact: NONE
- Integrity Impact: NONE
- Availability Impact: LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:L
Timeline
Published: Nov. 15, 2025, 9:15 a.m.
Last Modified: Nov. 15, 2025, 9:15 a.m.
Last Modified: Nov. 15, 2025, 9:15 a.m.
Status : Received
CVE has been recently published to the CVE List and has been received by the NVD.
More infoSource
cve@gitlab.com
*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.