CVE-2026-45831 PUBLISHED

Assigner: HiddenLayer
Reserved: 13.05.2026 Published: 12.06.2026 Updated: 12.06.2026

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 applies to allowing users to perform cross tenant actions.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
CVSS Score: 8.8

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	High
Attack Complexity	Low	Integrity	High	Integrity	High
Attack Requirements	Present	Availability	None	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	Chroma
Product	ChromaDB
Versions	Default: unaffected affected from 0.5.0 to * (incl.)

References

https://www.hiddenlayer.com/sai-security-advisory/2026-06-chromadb-3

Problem Types

CWE-863: Incorrect Authorization CWE

Impacts

CAPEC-180 Exploiting Incorrectly Configured Access Control Security Levels