Denial of Service Vulnerability in GitLab CE/EE
CVE-2025-13335

6.5MEDIUM

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
22 January 2026

What is CVE-2025-13335?

GitLab has identified a vulnerability in its CE/EE versions that could enable an authenticated user to exploit malformed Wiki documents. This could result in a denial of service (DoS) condition by bypassing cycle detection mechanisms, potentially impacting system performance and availability.

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Deploy the Patch

Affected Version(s)

GitLab 17.1 < 18.6.4

GitLab 18.7 < 18.7.2

GitLab 18.8 < 18.8.2

References

https://gitlab.com/gitlab-org/gitlab/-/issues/581060
issue-trackingpermissions-required
https://hackerone.com/reports/3418023
technical-descriptionexploitpermissions-required
https://about.gitlab.com/releases/2026/01/21/patch-releas...

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Thanks [sim4n6](https://hackerone.com/sim4n6) for reporting this vulnerability through our HackerOne bug bounty program
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