VDB
CVE-2026-1659
CVE-2026-1659
PUBLISHED
CVSS 7.5 HIGH
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.
EPSS 0.05% · 15.5th percentile
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.05%
15.5th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| GitLab | GitLab | 9.0, 18.11, 18.10 |
Timeline
- Apr 29, 2026 PoC Published
- Apr 29, 2026 PoC Published
- May 14, 2026 CVE Published
- May 14, 2026 PoC Published
- May 14, 2026 PoC Published
- May 14, 2026 PoC Published
- May 15, 2026 Security Advisory
- May 18, 2026 EPSS Score
- May 19, 2026 EPSS Score
- May 20, 2026 EPSS Score
- May 21, 2026 EPSS Score
- May 22, 2026 EPSS Score
References
- HackerOne Bug Bounty Report #3519824 exploit
- https://gitlab.com/gitlab-org/gitlab/-/work_items/588201 url
- https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/ url
- https://nvd.nist.gov/vuln/detail/CVE-2026-1659 advisory
- https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released url
- https://docs.gitlab.com/releases/patches/patch-release-gitlab-18-11-3-released/ advisory