EUVD-2026-15803

| CVE-2026-2726 MEDIUM
2026-03-25 GitLab GHSA-4j77-rj27-2wxq
4.3
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

Lifecycle Timeline

4
PoC Detected
Mar 26, 2026 - 18:30 vuln.today
Public exploit code
EUVD ID Assigned
Mar 25, 2026 - 16:47 euvd
EUVD-2026-15803
Analysis Generated
Mar 25, 2026 - 16:47 vuln.today
CVE Published
Mar 25, 2026 - 16:34 nvd
MEDIUM 4.3

Tags

Gitlab Authentication Bypass

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.10 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an authenticated user to perform unauthorized actions on merge requests in other projects due to improper access control during cross-repository operations.

Analysis

GitLab CE/EE contains an improper access control vulnerability in cross-repository merge request operations that allows authenticated users to perform unauthorized actions on merge requests in projects they should not have access to. Affected versions span from 11.10 through 18.10.1, with patches available in 18.8.7, 18.9.3, and 18.10.1. …

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Remediation

Within 30 days: Identify affected systems running GitLab CE/EE affecting all and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

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Priority Score

42
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +22
POC: +20

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EUVD-2026-15803 vulnerability details – vuln.today
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