CVE-2026-1659

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 9.0 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an unauthenticated user to cause denial of service by sending specially crafted requests due to insufficient input validation.

CVSS v3.1

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

EPSS

0.36% chance of exploitation in the next 30 days, 28th percentile

Published

2026-05-14

Proof-of-concept exploits (1)

• https://hackerone.com/reports/3519824

References

• CVE Record
• NVD entry

Related

• CVE-2026-16589
• CVE-2026-16590
• CVE-2026-16583
• CVE-2026-16594
• CVE-2026-16578
• CVE-2026-16595