Vulnerability details

CVE-2026-15423

GitLab GitLab

Incorrect Authorization in GitLab

CVSS 3.1

8.5High

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.

CVSS scores

Score	Version	Source	Vector
8.5High	3.1	CVEProject cvelistV5 (CNA) (GitLab)	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N`

Affected products

Vendor	Product	Versions	Source
GitLab	GitLab	19.0 ≤ v < 19.0.6	CVEProject cvelistV5 (CNA)
GitLab	GitLab	19.1 ≤ v < 19.1.4	CVEProject cvelistV5 (CNA)
GitLab	GitLab	19.2 ≤ v < 19.2.2	CVEProject cvelistV5 (CNA)

References and advisories

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

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Details

Published: 2026-08-12
Last updated: 2026-08-13
State: Published
Assigner (CNA): GitLab

Exploit prediction (EPSS)

0.4%

Probability of exploitation in 30 days

34.3%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Partial

Weaknesses (CWE)

CWE-863
Incorrect Authorization