CVE-2026-1387

MEDIUM

GitLab 15.6-18.6.6, 18.7-18.7.4, 18.8-18.8.4 - Authenticated Denial of Service via GraphQL File Query

Title source: llm
STIX 2.1

Description

GitLab has remediated an issue in GitLab EE affecting all versions from 15.6 before 18.6.6, 18.7 before 18.7.4, and 18.8 before 18.8.4 that could have allowed an authenticated user to cause Denial of Service by uploading a malicious file and repeatedly querying it through GraphQl.

References (3)

Core 3
Core References
Broken Link, Issue Tracking issue-tracking permissions-required
https://gitlab.com/gitlab-org/gitlab/-/issues/587546
Broken Link technical-description exploit permissions-required
https://hackerone.com/reports/3515994

Scores

CVSS v3 6.5
EPSS 0.0029
EPSS Percentile 20.4%
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 poc
Automatable no
Technical Impact partial

Details

CWE
CWE-770
Status published
Products (1)
gitlab/gitlab 15.6.0 - 18.6.6
Published Feb 11, 2026
Tracked Since Feb 18, 2026