CVE-2026-8828: CWE-639 Authorization bypass through User-Controlled key in Chroma ChromaDB
CVE-2026-8828 is a high-severity vulnerability in ChromaDB Rust project version 1.0.0 that allows any authenticated user to bypass authorization controls. This flaw enables users to read, write, update, or delete data in any tenant's collection regardless of their tenant membership. The vulnerability arises from a lack of authorization validation related to user-controlled keys.
AI Analysis
Technical Summary
CVE-2026-8828 is an authorization bypass vulnerability (CWE-639) affecting ChromaDB Rust project starting from version 1.0.0. Due to insufficient authorization validation, authenticated users can perform arbitrary data operations across tenant boundaries, compromising data confidentiality and integrity. The vulnerability has a CVSS 4.0 base score of 8.8, indicating high severity. No official patch or remediation is currently documented, and no known exploits are reported in the wild.
Potential Impact
Exploitation of this vulnerability allows authenticated users to access and manipulate data belonging to other tenants, violating tenant isolation and potentially leading to data leakage, unauthorized data modification, or deletion. This undermines the security guarantees expected in multi-tenant environments.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to trusted users only and monitor for suspicious activity related to tenant data access. Avoid deploying vulnerable versions in production environments where tenant data isolation is critical.
CVE-2026-8828: CWE-639 Authorization bypass through User-Controlled key in Chroma ChromaDB
Description
CVE-2026-8828 is a high-severity vulnerability in ChromaDB Rust project version 1.0.0 that allows any authenticated user to bypass authorization controls. This flaw enables users to read, write, update, or delete data in any tenant's collection regardless of their tenant membership. The vulnerability arises from a lack of authorization validation related to user-controlled keys.
CVSS v4.0
Score 8.8high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-8828 is an authorization bypass vulnerability (CWE-639) affecting ChromaDB Rust project starting from version 1.0.0. Due to insufficient authorization validation, authenticated users can perform arbitrary data operations across tenant boundaries, compromising data confidentiality and integrity. The vulnerability has a CVSS 4.0 base score of 8.8, indicating high severity. No official patch or remediation is currently documented, and no known exploits are reported in the wild.
Potential Impact
Exploitation of this vulnerability allows authenticated users to access and manipulate data belonging to other tenants, violating tenant isolation and potentially leading to data leakage, unauthorized data modification, or deletion. This undermines the security guarantees expected in multi-tenant environments.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to trusted users only and monitor for suspicious activity related to tenant data access. Avoid deploying vulnerable versions in production environments where tenant data isolation is critical.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- HiddenLayer
- Date Reserved
- 2026-05-18T13:23:36.281Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a2c2839e617e2d83487dad6
Added to database: 06/12/2026, 15:39:37 UTC
Last enriched: 06/19/2026, 18:29:47 UTC
Last updated: 07/31/2026, 19:23:00 UTC
Views: 121
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