CVE-2025-13927

HIGH

GitLab 11.9-18.6.3, 18.7-18.7.1, 18.8-18.8.1 - Unauthenticated Denial of Service via Malformed Authentication Data

Title source: llm
STIX 2.1

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.9 before 18.6.4, 18.7 before 18.7.2, and 18.8 before 18.8.2 that could have allowed an unauthenticated user to create a denial of service condition by sending crafted requests with malformed authentication data.

References (3)

Core 3
Core References
Broken Link issue-tracking permissions-required
https://gitlab.com/gitlab-org/gitlab/-/issues/582737
Permissions Required technical-description exploit permissions-required
https://hackerone.com/reports/3439683

Scores

CVSS v3 7.5
EPSS 0.0006
EPSS Percentile 17.3%
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 (1)
gitlab/gitlab 11.9.0 - 18.6.4 (2 CPE variants)
Published Jan 22, 2026
Tracked Since Feb 18, 2026