Vulnerability · Published Aug 12, 2026 · Assigned by GitLab

CVE-2026-15423Incorrect Authorization in GitLab

High 8.5

In plain English

A high-severity incorrect authorization in GitLab from GitLab. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).

Severity (CVSS 3.1)8.5High

Exploit odds (30 days)0.4%top 65.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
GitLab	GitLab	19.0 – before 19.0.619.1 – before 19.1.419.2 – before 19.2.2

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/605705
HackerOne Bug Bounty Report #3832069 technical-description, exploit, permissions-required
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-2-released/