CVE-2026-45830: Trychroma Chromadb

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

A lack of authorization validation in version 0.4.17 or later of the ChromaDB Python project allows any authenticated users to arbitrarily read, write, update, or delete data in any tenant's collection regardless of which tenant they belong to.

Affected products

• Trychroma Chromadb: from 0.4.17, up to and including 1.5.9

Published 2026-06-12. Last modified 2026-07-15.