CVE-2026-15423 PUBLISHED

Incorrect Authorization in GitLab

Assigner: GitLab
Reserved: 10.07.2026 Published: 12.08.2026 Updated: 13.08.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N
CVSS Score: 8.5

Attack Vector	Network	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	GitLab
Product	GitLab
Versions	Default: unaffected affected from 19.0 to 19.0.6 (excl.) affected from 19.1 to 19.1.4 (excl.) affected from 19.2 to 19.2.2 (excl.)

Solutions

Upgrade to versions 19.0.6, 19.1.4, 19.2.2 or above.

Credits

Thanks [sim4n6](https://hackerone.com/sim4n6) for reporting this vulnerability through our HackerOne bug bounty program finder

References

Problem Types

CWE-863: Incorrect Authorization CWE