CVE-2026-1747

Authentication Bypass Using an Alternate Path or Channel in GitLab

GitLab has remediated an issue in GitLab EE affecting all versions from 17.11 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that, under certain conditions, could have allowed Developer-role users with insufficient privileges to make unauthorized modifications to protected Conan packages.

Affected

GitLab

CVSS v3.1 GITLAB

4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS

0.24% chance of exploitation in the next 30 days, 15th percentile

Published

2026-02-25

Updated

2026-02-26

Proof-of-concept exploits (1)

• https://hackerone.com/reports/3533088

Security advisories

• https://about.gitlab.com/releases/2026/02/25/patch-release-gitlab-18-9-1-released

References

• CVE Record
• NVD entry