CVE-2025-13690

MEDIUM 6.5

Allocation of Resources Without Limits or Throttling in GitLab

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.11 before 18.7.6, 18.8 before 18.8.6, and 18.9 before 18.9.2 that could have allowed an authenticated user to cause a denial of service condition due to improper input validation on webhook custom header names under certain conditions.

CWE	CWE-770
Vendor	gitlab
Product	gitlab
Ecosystems	DevTools
Industries	Technology
Published	Mar 11, 2026
Last Updated	Mar 12, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

GitLab / GitLab

16.11 < 18.7.6 18.8 < 18.8.6 18.9 < 18.9.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

hackerone.com: https://hackerone.com/reports/3415683 gitlab.com: https://gitlab.com/gitlab-org/gitlab/-/work_items/582096 about.gitlab.com: https://about.gitlab.com/releases/2026/03/11/patch-release-gitlab-18-9-2-released/

Credits

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