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9.4 Critical

A code injection vulnerability in version 0.4.17 or later of the ChromaDB Python project allows an authenticated attacker to run arbitrary…

CVE-2026-45833

A code injection vulnerability in version 0.4.17 or later of the ChromaDB Python project allows an authenticated attacker to run arbitrary code on the server by sending a malicious model repository and trustremotecode set to true in the /api/v2/tenants/defaulttenant/databases/defaultdatabase/collections/{collectionid} if they have the UPDATECOLLECTION permission.

Proof-of-concept code is published

Public PoC

Signals come from Exploit-DB, Metasploit, Nuclei and published proof-of-concept repositories. Their absence means nothing was found, not that nothing exists.

Part of the AI stack

This affects Chroma, in Vector & retrieval.

Assessment

CVSS
9.4 (v4.0)
Severity
Critical
EPSS
0.34% chance of exploitation in the next 30 days
Known exploited
Not listed in CISA KEV
Exploit availability
Public PoC
Published
12 June 2026
Last updated
26 October 2026
Affected
Chroma · ChromaDB · chromadb
Weakness
CWE-94
Assigner
6f8de1f0-f67e-45a6-b68f-98777fdb759c

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

At the source

References

Community proofs of concept

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