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Vulnerability record · CVE-2026-45830 · published 12 June 2026

CVE-2026-45830: Trychroma chromadb insecure direct object reference vulnerability

Trychroma · Chromadb

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.

8.8 CVSS 4.0 High EPSS 0.50% · top 60.0% CWE-639 · Insecure direct object referenceCWE-266 · CWE-266
8.8CVSS 4.0 base score
0.50%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
15 Jul 2026Last modified by NVD

Description

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.

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/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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.hiddenlayer.com/sai-security-advisory/2026-06-chromadb Third Party Advisory
https://access.redhat.com/security/cve/CVE-2026-45830
https://bugzilla.redhat.com/show_bug.cgi?id=2488408
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45830.json

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.4CVE-2026-45833Trychroma chromadb code injection vulnerabilityA code injection vulnerability in version 0.4.17 or later of the ChromaDB Python project allows an authenticated attacker to run arbitrary code on th…EPSS 0.63%8.8CVE-2026-45831Trychroma chromadb incorrect authorization vulnerabilityThe SimpleRBACAuthorizationProvider authorization provider in versions 0.5.0 or later of the ChromaDB Python project evaluates whether a user holds a…EPSS 0.42%8.8CVE-2026-45832Trychroma chromadb insecure direct object reference vulnerabilityAll V1 collection-level endpoints in ChromaDB's Python project pass None for the tenant and database to the authorization layer, allowing attackers t…EPSS 0.52%8.4CVE-2026-55255Langflow IDOR in responses endpoint allows cross-user flow executionLangflow before 1.9.1 has an insecure direct object reference in the /api/v1/responses endpoint. An authenticated attacker can supply another user's …KEVEPSS 0.89%analysed

Source: NIST National Vulnerability Database (record CVE-2026-45830), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.