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PatchSiren cyber security CVE debrief

CVE-2026-45833 Chroma CVE debrief

CVE-2026-45833 is a critical code injection vulnerability in the ChromaDB Python project, affecting versions 0.4.17 or later. An authenticated attacker with the UPDATE_COLLECTION permission can exploit this vulnerability by sending a malicious model repository and setting trust_remote_code to true in the /api/v2/tenants/default_tenant/databases/default_database/collections/{collection_id} endpoint, allowing them to run arbitrary code on the server.

Vendor
Chroma
Product
ChromaDB
CVSS
CRITICAL 9.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-12
Original CVE updated
2026-07-15
Advisory published
2026-06-12
Advisory updated
2026-07-15

Who should care

Users of ChromaDB Python project versions 0.4.17 or later, especially those with the UPDATE_COLLECTION permission, should be aware of this critical vulnerability.

Technical summary

The vulnerability has a CVSS score of 9.4 and is classified as CRITICAL. It requires low attack complexity and can be exploited over the network with low privileges.

Defensive priority

High

Recommended defensive actions

  • Update to a patched version of ChromaDB Python project, if available.
  • Restrict UPDATE_COLLECTION permission to only necessary users.
  • Monitor the /api/v2/tenants/default_tenant/databases/default_database/collections/{collection_id} endpoint for suspicious activity.
  • Consider setting trust_remote_code to false, if possible.

Evidence notes

Evidence from Hiddenlayer suggests that this vulnerability exists in ChromaDB Python project.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-45833 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-45833

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-45833 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-45833

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://www.hiddenlayer.com/sai-security-advisory/2026-06-chromadb-5

    6f8de1f0-f67e-45a6-b68f-98777fdb759c

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.