What’s Vulnerable › Vulnerabilities

CVE-2026-8937: Missing Authorization in GitLab

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-29 · updated 2026-10-05
• Weakness: CWE-862

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.0 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 authenticated user to read private child issue contents, including titles and descriptions, from projects they had no access to, due to missing authorization checks on linked work items within visible epics.

Affected products

• GitLab: from 19.0.0 before 19.2.7; from 19.3.0 before 19.3.3; 19.4.0 — fixed in 19.2.7, 19.3.3

How to fix

Upgrade to a fixed version: GitLab 19.2.7, 19.3.3. Check the vendor advisory for mitigations.

References

• https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-1-released/
• https://gitlab.com/gitlab-org/gitlab/-/work_items/600533
• https://hackerone.com/reports/3702369

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