Resource exhaustion in GitLab
CVE-2026-1662
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 14.4 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that could have allowed an unauthenticated user to cause Denial of Service by sending specially crafted requests to the Jira events endpoint.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.004 (27.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- GitLab — versions 14.4, 18.9.0, 18.8
Weakness classification (CWE)
References
- gitlab.com/gitlab-org/gitlab/-/issues/588206 (issue-tracking, permissions-required, Broken Link)
- hackerone.com/reports/3519694 (Permissions Required, technical-description, permissions-required, exploit)
- about.gitlab.com/releases/2026/02/25/patch-release-gitlab-18-9-1-released/ (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-1662?
- CVE-2026-1662 is a high-severity vulnerability in GitLab, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-02-25.
- How severe is CVE-2026-1662?
- High severity. CVSS v3 base score is 7.5 out of 10.