Guest-level incident hierarchy modification via API bypass
Published Jun 26, 2025 · Updated Jun 26, 2025
Missing authorization in affected GitLab CE/EE releases allows remote authenticated users to add child items to incident work items. The child-item API accepts crafted requests without independently enforcing the Guest role restriction applied by the user interface. A Guest account with access to an incident work item is required, and exploitation changes that incident's work-item hierarchy without broader project privileges.
Summary
What happened
Missing authorization in affected GitLab CE/EE releases allows remote authenticated users to add child items to incident work items. The child-item API accepts crafted requests without independently enforcing the Guest role restriction applied by the user interface. A Guest account with access to an incident work item is required, and exploitation changes that incident's work-item hierarchy without broader project privileges.
The record
- CVE
- CVE-2025-5315
- Published
- Jun 26, 2025
- Updated
- Jun 26, 2025
- Vendor
- GitLab
- Product
- GitLab
- Classifications
- CWE-862
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 26, 2025CVE publishedPublication date reported by the CVE source.
- Jun 26, 2025Record 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=17.2 <17.11.5
- Affected versionversion=18.0 <18.0.3
- Affected versionversion=18.1 <18.1.1
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.
Weakness, pattern, technique
Public exploit references
- HackerOne Bug Bounty Report 3163037proof of concept · unverified
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Technologies
Your stack
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Your stack
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