🛡️ CVE-2025-2937 — gitlab

🟡 CVSS 5.0 — Medium ✅ No Known Exploit CWE-1333 OSV

5.0

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

Inefficient Regular Expression Complexity in GitLab

An issue has been discovered in GitLab CE/EE affecting all versions from 13.2 before 18.0.6, 18.1 before 18.1.4, and 18.2 before 18.2.2 that could have allowed authenticated users to create a denial of service condition by sending specially crafted markdown payloads to the Wiki feature.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

CVE-2025-2937 is classified as CWE-1333: Inefficient Regular Expression Complexity. A regular expression backtracks catastrophically on crafted input, consuming CPU out of proportion to input size.

Affected software

CVE-2025-2937 is recorded against 1 package.

gitlab

Timeline and source

Published on 18 August 2025 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

gitlab.com (Web)
hackerone.com (Web)
nvd.nist.gov (Web)

CVE-2025-2937 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Ubuntu

Details

Severity MEDIUM

CVSS Score 5.0

CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE CWE-1333

Public Exploit ✅ No

Source OSV

Published 2025-08-18

Updated 2026-08-12

Modified 2026-06-17

Fix URL N/A

Affected Packages

Software	From version	Fixed in
gitlab	—	—

References

WEB https://gitlab.com/gitlab-org/gitlab/-/issues/528995

WEB https://hackerone.com/reports/3058879

WEB https://nvd.nist.gov/vuln/detail/CVE-2025-2937

🔗 NVD 🔗 Mitre

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