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PatchSiren cyber security CVE debrief

CVE-2026-8828 Chroma CVE debrief

CVE-2026-8828 is a high-severity vulnerability in the ChromaDB Rust project. A lack of authorization validation in version 1.0.0 or later allows any authenticated users to arbitrarily read, write, update, or delete data in any tenant's collection, regardless of which tenant they belong to. This vulnerability has a CVSS score of 8.8 and is considered HIGH severity.

Vendor
Chroma
Product
ChromaDB
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-12
Original CVE updated
2026-06-12
Advisory published
2026-06-12
Advisory updated
2026-06-12

Who should care

Users of ChromaDB Rust project version 1.0.0 or later, especially those with multi-tenant setups, should be aware of this vulnerability and take immediate action to mitigate the risk.

Technical summary

The ChromaDB Rust project suffers from a lack of authorization validation. This vulnerability allows any authenticated users to perform arbitrary read, write, update, or delete operations on data in any tenant's collection, irrespective of their own tenant affiliation.

Defensive priority

High

Recommended defensive actions

  • Update to a patched version of ChromaDB Rust project as soon as available.
  • Implement proper authorization validation for tenant data access.
  • Restrict access to sensitive data and collections.
  • Monitor for suspicious activity and implement additional security measures as needed.

Evidence notes

Evidence from Hiddenlayer indicates a potential vulnerability in ChromaDB Rust project.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-8828 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-8828

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

  • CVE-2026-8828 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-8828

    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-2

    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.