What is CVE-2026-1659?

CVE-2026-1659 is a high-severity vulnerability in Gitlab, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-05-14.

How severe is CVE-2026-1659?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Gitlab

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 cr…

EPSS: 0.000 (15.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Gitlab — versions 9.0, 18.10, 18.11

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

cve@gitlab.com (Permissions Required, technical-description, permissions-required, exploit)
cve@gitlab.com (Broken Link)
cve@gitlab.com (Release Notes)

Frequently asked questions

What is CVE-2026-1659?: CVE-2026-1659 is a high-severity vulnerability in Gitlab, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-05-14.
How severe is CVE-2026-1659?: High severity. CVSS v3 base score is 7.5 out of 10.