CVE-2026-45829: ChromaDB Python project has a pre-authentication code injection vulnerability

May 18, 2026 (updated May 29, 2026)

A pre-authentication, code injection vulnerability in version 1.0.0 or later of the ChromaDB Python project allows an unauthenticated attacker to run arbitrary code on the server by sending a malicious model repository and trust_remote_code set to true in the /api/v2/tenants/{tenant}/databases/{db}/collections endpoint.

References

github.com/advisories/GHSA-f4j7-r4q5-qw2c
github.com/chroma-core/chroma/issues/6717
nvd.nist.gov/vuln/detail/CVE-2026-45829
www.hiddenlayer.com/research/chromatoast-served-pre-auth

Code Behaviors & Features

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