CVE-2026-1659

HIGH

Allocation of Resources Without Limits or Throttling in GitLab

Title source: cna

Description

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.

References (3)

Core 3

Core References

Exploit technical-description exploit permissions-required

HackerOne Bug Bounty Report #3519824

https://hackerone.com/reports/3519824

https://gitlab.com/gitlab-org/gitlab/-/work_items/588201

https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/

Scores

CVSS v3 7.5

EPSS 0.0005

EPSS Percentile 15.2%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-770

Status published

Products (4)

GitLab/GitLab 18.10 - 18.10.6

GitLab/GitLab 18.11 - 18.11.3

GitLab/GitLab 9.0 - 18.9.7

gitlab/gitlab 9.0.0 - 18.9.7 (2 CPE variants)

Published May 14, 2026

Tracked Since May 14, 2026