CVE-2026-45829

Severity: critical (CVSS 10.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 15.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-18 · updated 2026-10-26
Weakness: CWE-94

Description

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.

Affected products

ChromaDB: from 1.0.0

References

https://github.com/chroma-core/chroma/issues/6717
https://www.hiddenlayer.com/research/chromatoast-served-pre-auth
https://access.redhat.com/security/cve/CVE-2026-45829
https://bugzilla.redhat.com/show_bug.cgi?id=2479623
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45829.json
https://www.hiddenlayer.com/research/chromatoast-served-pre-auth

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