CVE-2026-45829

critical

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.

References

References
More

https://www.securityweek.com/unpatched-chromadb-vulnerability-can-lead-to-server-takeover/

https://www.bleepingcomputer.com/news/security/max-severity-flaw-in-chromadb-for-ai-apps-allows-server-hijacking/

https://www.hiddenlayer.com/research/chromatoast-served-pre-auth

https://github.com/chroma-core/chroma/issues/6717

Details

Source: Mitre, NVD

Published: 2026-05-18

Updated: 2026-05-19

Named Vulnerability: ChromaToast

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

CVSS v4

Base Score: 10

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Severity: Critical

EPSS

EPSS: 0.00139