HighVulnerability
CVE-2026-45830: ChromaDB Python authorization flaw allows cross-tenant data access
- Source
- NVD(opens in a new tab)
- Identifier
- CVE-2026-45830
- Published
- Record updated
- Affected
- chromadb >= 0.4.17, <= 1.5.9
- Fixed in
- No fixed version was stated when the source was last read.
- Known exploitation
- Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
- EPSS
- 0.3%
Summary
CVE-2026-45830 is an authorization validation flaw in version 0.4.17 or later of the ChromaDB Python project. Any authenticated user can read, write, update, or delete data in any tenant's collection, regardless of which tenant they belong to. HiddenLayer assigned a CVSS 4.0 score of 8.8 (HIGH), and NIST has not yet provided an assessment.
Mitigation
The source does not state a fix yet. Check the original advisory for updates.
Affected packages in the Exposure Registry
Matched by package name and ecosystem. Each entry shows whether the package delegates to a language model and how many tracked packages depend on it.
- chromadbPyPILLM dependency since 2023-02-09 · 17 tracked dependents
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