CVE-2026-1101

MEDIUM

Improper Validation of Specified Quantity in Input in GitLab

Title source: cna

Description

GitLab has remediated an issue in GitLab EE affecting all versions from 18.2 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that could have allowed an authenticated user to cause denial of service to the GitLab instance due to improper input validation in GraphQL queries.

References (3)

[Exploit] https://hackerone.com/reports/3460228

https://gitlab.com/gitlab-org/gitlab/-/work_items/586488

https://about.gitlab.com/releases/2026/04/08/patch-release-gitlab-18-10-3-released/

Scores

CVSS v3 6.5

EPSS 0.0002

EPSS Percentile 6.1%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-1284

Status published

Products (4)

GitLab/GitLab 18.10 - 18.10.3

GitLab/GitLab 18.2 - 18.8.9

gitlab/gitlab 18.2 - 18.8.9

GitLab/GitLab 18.9 - 18.9.5

Published Apr 08, 2026

Tracked Since Apr 09, 2026