What is CVE-2026-45831?

CVE-2026-45831 is a high-severity vulnerability in Chroma Chromadb, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2026-06-12.

How severe is CVE-2026-45831?

High severity. CVSS v3 base score is 8.8 out of 10.

Auth bypass in Chroma Chromadb

CVE-2026-45831

The SimpleRBACAuthorizationProvider authorization provider in versions 0.5.0 or later of the ChromaDB Python project evaluates whether a user holds a given permission but never checks which tenant, database, or collection that permission a…

Vulnerability class: Broken Access Control

EPSS: 0.002 (14.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Chroma Chromadb — versions 0.5.0
Trychroma Chromadb

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

6f8de1f0-f67e-45a6-b68f-98777fdb759c (Third Party Advisory)

Frequently asked questions

What is CVE-2026-45831?: CVE-2026-45831 is a high-severity vulnerability in Chroma Chromadb, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2026-06-12.
How severe is CVE-2026-45831?: High severity. CVSS v3 base score is 8.8 out of 10.