CVE-2026-45831: ChromaDB SimpleRBACAuthorizationProvider skips tenant and collection scope

Summary

CVE-2026-45831 affects the SimpleRBACAuthorizationProvider authorization provider in versions 0.5.0 or later of the ChromaDB Python project. The provider checks whether a user holds a given permission but never checks which tenant, database, or collection that permission applies to, which allows cross-tenant actions. HiddenLayer rates it CVSS 4.0 8.8 (High), and NIST has not yet provided an assessment.

Mitigation

The source does not state a fix yet. Check the original advisory for updates.

Affected packages in the Exposure Registry

Matched by package name and ecosystem. Each entry shows whether the package delegates to a language model and how many tracked packages depend on it.

• chromadbPyPILLM dependency since 2023-02-09 · 17 tracked dependents

Related items

• MediumCVE-2026-121936: easyVoice server-side request forgery through openaiBaseUrl in /api/v1/ttsSimilar attack · NVD/CVE Database
• MediumCVE-2026-118628: MLflow get-artifacts server-side request forgery information disclosureSimilar attack · NVD/CVE Database
• HighCVE-2026-118625: MLflow Tracking Server privilege escalation via get_endpointsSimilar attack · NVD/CVE Database
• InfoWhen trust becomes the payload: Inside the threats, etc quarterly reportSimilar attack · Elastic Security Labs
• MediumCritical Langflow flaws enable authentication bypass and RCESimilar attack · CSO Online