CVE-2026-45833: Chromadb ChromaDB Has A Code Injection Vulnerability

CRITICAL
Advisory Identifier: GHSA-36p7-vc44-83pf
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CWE-94
Published
Advisory Summary

CVE-2026-45833 is a CRITICAL chromadb has a code injection vulnerability (CWE-94: Improper Control of Generation of Code ('Code Injection')) affecting Chromadb libraries in the PyPI ecosystem. The issue involves chromadb has a code injection vulnerability. Remediation is available in the latest vendor maintenance releases.

CVE-2026-45833 at a Glance

CVE Identifier CVE-2026-45833
GHSA Identifier GHSA-36p7-vc44-83pf
Severity CRITICAL
CVSS v3.1 Base Score N/A
CWE Classification CWE-94: Improper Control of Generation of Code ('Code Injection')
Affected Product Chromadb
Package Ecosystem PyPI
Published Date
Last Updated

How to Fix CVE-2026-45833

To remediate this vulnerability, upgrade all affected Chromadb dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

chromadb fixed: Latest secure release 
pip install chromadb>=Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show chromadb

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-45833, inspect your installed packages using pip:

pip show chromadb

Analyze the terminal output to locate any version of Chromadb in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The pip show chromadb command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-94: Improper Control of Generation of Code ('Code Injection'), where the product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. In Chromadb, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

A code injection vulnerability in version 0.4.17 or later of the ChromaDB Python project allows an authenticated 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/default_tenant/databases/default_database/collections/{collection_id} if they have the UPDATE_COLLECTION permission.

CVE-2026-45833 Affected Chromadb Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
chromadb
pypi/chromadb
PyPI
≥ 0.4.17
≤ 1.5.9

References

NVD — CVE-2026-45833 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-45833
Chromadb Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2026-45833
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2488430
Chromadb Source Repository REPOSITORY
https://github.com/chroma-core/chroma
Chromadb Security Information SECURITY
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45833.json
Chromadb Security Information SECURITY
https://www.hiddenlayer.com/sai-security-advisory/2026-06-chromadb-5

Frequently Asked Questions

What is CVE-2026-45833?
CVE-2026-45833 is a security vulnerability in Chromadb involving ChromaDB has a code injection vulnerability under CWE-94: Improper Control of Generation of Code ('Code Injection').
Which Chromadb versions are affected?
Affected versions include releases prior to current release patches across affected packages: chromadb.
What version fixes CVE-2026-45833?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is chromadb affected?
Yes, chromadb is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What CWE is associated with CVE-2026-45833?
CVE-2026-45833 is classified under CWE-94: Improper Control of Generation of Code ('Code Injection') (The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.).
How can I check PyPI dependencies for CVE-2026-45833?
Run the dependency tree command: 'pip show chromadb'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-36p7-vc44-83pf",
  "modified" : "2026-08-24T20:03:34Z",
  "published" : "2026-06-12T18:31:56Z",
  "aliases" : [ "CVE-2026-45833" ],
  "summary" : "ChromaDB has a code injection vulnerability",
  "details" : "A code injection vulnerability in version 0.4.17 or later of the ChromaDB Python project allows an authenticated 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/default_tenant/databases/default_database/collections/{collection_id} if they have the UPDATE_COLLECTION permission.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "chromadb"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.4.17"
      }, {
        "last_affected" : "1.5.9"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-45833"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/security/cve/CVE-2026-45833"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2488430"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/chroma-core/chroma"
  }, {
    "type" : "WEB",
    "url" : "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45833.json"
  }, {
    "type" : "WEB",
    "url" : "https://www.hiddenlayer.com/sai-security-advisory/2026-06-chromadb-5"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-94" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-24T20:03:34Z",
    "nvd_published_at" : "2026-06-12T16:16:29Z"
  }
}