Higher-privileged member removal via unchecked custom roles
Published Apr 8, 2026 · Updated Apr 8, 2026
Missing authorization in GitLab CE/EE allows remote authenticated users to demote or remove higher-privileged group members. Member management operations accept custom-role permissions without verifying that the target member holds a higher privilege level. Exploitation requires a high-privileged custom role and permits unauthorized changes to group membership, without reported confidentiality or availability impact.
Summary
What happened
Missing authorization in GitLab CE/EE allows remote authenticated users to demote or remove higher-privileged group members. Member management operations accept custom-role permissions without verifying that the target member holds a higher privilege level. Exploitation requires a high-privileged custom role and permits unauthorized changes to group membership, without reported confidentiality or availability impact.
The record
- CVE
- CVE-2026-4916
- Published
- Apr 8, 2026
- Updated
- Apr 8, 2026
- Vendor
- GitLab
- Product
- GitLab
- Classifications
- CWE-862, T1531
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Apr 8, 2026CVE publishedPublication date reported by the CVE source.
- Apr 8, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=18.10 <18.10.3
- Affected versionversion=18.2 <18.8.9
- Affected versionversion=18.9 <18.9.5
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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