CVE-2026-45831
ChromaDB Cross-Tenant Privilege Escalation
Description
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.
INFO
Published Date :
June 12, 2026, 4:16 p.m.
Last Modified :
June 12, 2026, 4:23 p.m.
Remotely Exploit :
Yes !
Source :
6f8de1f0-f67e-45a6-b68f-98777fdb759c
Affected Products
The following products are affected by CVE-2026-45831
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | HIGH | 6f8de1f0-f67e-45a6-b68f-98777fdb759c | ||||
| CVSS 4.0 | HIGH | 6f8de1f0-f67e-45a6-b68f-98777fdb759c |
Solution
- Update ChromaDB to the latest version.
- Verify tenant permissions are strictly enforced.
- Review access control configurations.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-45831.
| URL | Resource |
|---|---|
| https://www.hiddenlayer.com/sai-security-advisory/2026-06-chromadb-3 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-45831 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-45831
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-45831 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-45831 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 6f8de1f0-f67e-45a6-b68f-98777fdb759c
Jun. 12, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-863 Added Reference https://www.hiddenlayer.com/sai-security-advisory/2026-06-chromadb-3