CVE-2025-8770 - CVE House
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Status published Medium CVE-2025-8770

Authorization Bypass Through User-Controlled Key in GitLab

Vulnerability Description

An issue has been discovered in GitLab EE affecting all versions from 18.0 prior to 18.0.6, 18.1 prior to 18.1.4, and 18.2 prior to 18.2.2 that could have allowed authenticated users with specific access to bypass merge request approval policies by manipulating approval rule identifiers.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • This vulnerability has been discovered internally by GitLab team member [Dominic Bauer](https://gitlab.com/bauerdominic).

References

More from GitLab

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CVE-2025-9642
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CVE-2025-9484
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Medium 4.3

Affected Vendor

Affected Software

GitLab
Vulnerable Versions:
18.0, 18.1, 18.2

Timeline

Official Publish: August 13th, 2025
Last Modified: August 13th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Weaknesses (CWE)

CWE-639

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1078 Valid Accounts
Persistence
T1213 Data from Information Repositories
Collection
T1021 Remote Services
Lateral Movement
T1098 Account Manipulation
Privilege Escalation