CVE-2026-1230

MEDIUM

GitLab 18.7.5/18.8.5/18.9.1 - Authenticated Repository Content Spoofing via Branch Reference Validation Bypass

Title source: llm
STIX 2.1

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 1.0 before 18.7.6, 18.8 before 18.8.6, and 18.9 before 18.9.2 that could have allowed an authenticated user to cause repository downloads to contain different code than displayed in the web interface due to incorrect validation of branch references under certain circumstances.

References (3)

Core 3
Core References
Third Party Advisory technical-description exploit permissions-required
https://hackerone.com/reports/3505165

Scores

CVSS v3 4.1
EPSS 0.0019
EPSS Percentile 9.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-706
Status published
Products (1)
gitlab/gitlab 1.0.0 - 18.7.6 (2 CPE variants)
Published Mar 11, 2026
Tracked Since Mar 11, 2026