CVE-2025-13690

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.

CVSS v3.1

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

EPSS

0.39% chance of exploitation in the next 30 days, 32th percentile

Published

2026-03-11

Updated

2026-03-12

Proof-of-concept exploits (1)

• https://hackerone.com/reports/3415683

References

• CVE Record
• NVD entry

Related

• CVE-2025-1369
• CVE-2025-1370
• CVE-2025-1368
• CVE-2025-1371
• CVE-2025-13673
• CVE-2025-1372