ZITADEL: Improper Role Revocation on Granted Projects during Multiple Role Deletions (CVE-2026-76081)
ZITADEL versions prior to 4.16.0 contain a bug in the role revocation process for User Grants on Granted Projects when multiple roles are deleted simultaneously. This bug can cause some user permissions to be missed during cleanup, potentially allowing users to retain elevated access that should have been removed. The issue does not affect direct project roles or global organization roles. The vulnerability has been fixed in version 4.16.0 with an update that includes an automatic database migration to correct any leftover permissions. No configuration workarounds exist; upgrading is the recommended remediation.
AI Analysis
Technical Summary
A flaw in ZITADEL's permission update logic occurs when multiple project roles are deleted simultaneously from User Grants on Granted Projects. Due to an error in iterating through a user's roles during this cross-organization cleanup, some roles may be skipped and not properly revoked. This can result in users retaining permissions that should have been removed, depending on the privileges of the skipped roles. The vulnerability affects ZITADEL versions 3.0.0 through 3.4.12 and 4.0.0 through 4.15.3. The issue is resolved in version 4.16.0, which includes a fix to the role-removal logic and an automatic database migration to remediate any residual incorrect permissions.
Potential Impact
Users with User Grants on Granted Projects may retain elevated permissions if multiple roles were deleted simultaneously, due to skipped role revocations. This could allow unauthorized access or actions within those granted projects. The impact is limited to User Grants on Granted Projects and does not affect direct project roles or global organization roles. The severity is medium with a CVSS score of 5.5, reflecting limited scope but potential for privilege retention.
Mitigation Recommendations
Upgrade affected ZITADEL instances to version 4.16.0 or later. This update fixes the role revocation logic and includes an automatic database migration that scans and corrects any user permissions left behind by the bug. There are no configuration workarounds. If immediate upgrade is not possible, manually review and adjust user permissions on Granted Projects where multiple roles were deleted to ensure no unintended permissions remain.
ZITADEL: Improper Role Revocation on Granted Projects during Multiple Role Deletions (CVE-2026-76081)
Description
ZITADEL versions prior to 4.16.0 contain a bug in the role revocation process for User Grants on Granted Projects when multiple roles are deleted simultaneously. This bug can cause some user permissions to be missed during cleanup, potentially allowing users to retain elevated access that should have been removed. The issue does not affect direct project roles or global organization roles. The vulnerability has been fixed in version 4.16.0 with an update that includes an automatic database migration to correct any leftover permissions. No configuration workarounds exist; upgrading is the recommended remediation.
CVSS v3.1
Score 5.5medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
A flaw in ZITADEL's permission update logic occurs when multiple project roles are deleted simultaneously from User Grants on Granted Projects. Due to an error in iterating through a user's roles during this cross-organization cleanup, some roles may be skipped and not properly revoked. This can result in users retaining permissions that should have been removed, depending on the privileges of the skipped roles. The vulnerability affects ZITADEL versions 3.0.0 through 3.4.12 and 4.0.0 through 4.15.3. The issue is resolved in version 4.16.0, which includes a fix to the role-removal logic and an automatic database migration to remediate any residual incorrect permissions.
Potential Impact
Users with User Grants on Granted Projects may retain elevated permissions if multiple roles were deleted simultaneously, due to skipped role revocations. This could allow unauthorized access or actions within those granted projects. The impact is limited to User Grants on Granted Projects and does not affect direct project roles or global organization roles. The severity is medium with a CVSS score of 5.5, reflecting limited scope but potential for privilege retention.
Mitigation Recommendations
Upgrade affected ZITADEL instances to version 4.16.0 or later. This update fixes the role revocation logic and includes an automatic database migration that scans and corrects any user permissions left behind by the bug. There are no configuration workarounds. If immediate upgrade is not possible, manually review and adjust user permissions on Granted Projects where multiple roles were deleted to ensure no unintended permissions remain.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-v859-c572-qh5p
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-76081"]
- Ecosystems
- ["Go"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6aa8a1cd55bf5e2cf5f3e923
Added to database: 09/15/2026, 01:39:25 UTC
Last enriched: 09/15/2026, 02:01:39 UTC
Last updated: 09/15/2026, 02:01:39 UTC
Views: 2
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