---
id: CVE-2026-45829
title: >-
  A pre-authentication, code injection vulnerability in version 1.0.0 or later
  of the ChromaDB Python project allows an unauthenticated attacker to run
  arbitrary code on the server by sending a malicious model repository and
  trust_remote_c…
summary: >-
  A pre-authentication, code injection vulnerability in version 1.0.0 or later
  of the ChromaDB Python project allows an unauthenticated attacker to run
  arbitrary code on the server by sending a malicious model repository and
  trust_remote_c…
severity: critical
cvss: 10
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-94
  - CWE-502
published: '2026-05-18'
updated: '2026-07-15'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-45829'
references:
  - url: 'https://github.com/chroma-core/chroma/issues/6717'
    label: 6f8de1f0-f67e-45a6-b68f-98777fdb759c
  - url: 'https://www.hiddenlayer.com/research/chromatoast-served-pre-auth'
    label: 6f8de1f0-f67e-45a6-b68f-98777fdb759c
  - url: 'https://access.redhat.com/security/cve/CVE-2026-45829'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2479623'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45829.json
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://www.hiddenlayer.com/research/chromatoast-served-pre-auth'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - exploit-available
epss: 0.12387
epssPercentile: 0.9602
ingestedAt: '2026-07-16T02:48:54.924Z'
exploits:
  github: 2
  githubRepos:
    - 'https://github.com/fevar54/FULL-ANALYSIS---CVE-2026-45829-ChromaDB-'
    - 'https://github.com/0xBlackash/CVE-2026-45829'
  checkedAt: '2026-09-24T07:53:04.228Z'
exploitAvailable: true
---

## Overview

A pre-authentication, code injection vulnerability in version 1.0.0 or later of the ChromaDB Python project allows an unauthenticated attacker to run arbitrary code on the server by sending a malicious model repository and trust_remote_code set to true in the /api/v2/tenants/{tenant}/databases/{db}/collections endpoint.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.