What’s Vulnerable › Vulnerabilities

CVE-2026-15423: Incorrect Authorization in GitLab

• Severity: high (CVSS 8.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-12 · updated 2026-08-19
• Weakness: CWE-863

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.0 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to execute CI/CD pipelines on a protected branch without the required push permissions due to improper authorization in pipeline reference validation.

Affected products

• GitLab: from 19.0.0 before 19.0.6; from 19.1.0 before 19.1.4; from 19.2.0 before 19.2.2 — fixed in 19.0.6, 19.1.4, 19.2.2

How to fix

Upgrade to a fixed version: GitLab 19.0.6, 19.1.4, 19.2.2. Check the vendor advisory for mitigations.

References

• https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-2-released/
• https://gitlab.com/gitlab-org/gitlab/-/work_items/605705
• https://hackerone.com/reports/3832069

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