CVE-2026-4523

Missing Authorization in GitLab

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.11 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an unauthenticated user to read CI/CD job trace contents containing sensitive variable values due to improper authorization enforcement in the GraphQL API.

Affected

GitLab

CVSS v3.1 GITLAB

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

EPSS

0.34% chance of exploitation in the next 30 days, 27th percentile

Published

2026-09-29

Proof-of-concept exploits (1)

• https://hackerone.com/reports/3590929

Security advisories

• https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-1-released

References

• CVE Record
• NVD entry