GCD AI RADAR
incidents/AIR-2026-0730

CVE-2026-45830: ChromaDB cross-tenant access vulnerability

Attack on AI2 Disclosed vulnerabilityInfrastructure vulnerability

A lack of proper authorization validation in ChromaDB enables any authenticated user to arbitrarily read, write, update, or delete data in collections across any tenant. The vulnerability compromises tenant isolation in shared vector database setups.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

Details

type
Attack on AI
An AI model, agent or AI-powered product was the thing exploited, abused or leaked.
categories
  • Infrastructure vulnerability
    CVEs and advisories in AI frameworks, inference servers, MCP servers, AI developer tools and hosting stacks.
owasp llm top 10
mitre atlas
no technique for these categories
Both rows are derived from the type and categories (OWASP 2025 edition, ATLAS release 2026.09), not classified per record. How
severity
2 · Disclosed vulnerability
CVE or vendor advisory, patched or patchable, no confirmed exploitation.
targets
Framework / tooling
products
ChromaDB
incident date
12 Jun 2026
first reported
12 Jun 2026
origin
GitHub Advisory Database
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
classifier confidence
0.95 · published at or above 0.80; see the methodology
tags
CVE-2026-45830 · authorization · chromadb
record
created 2026-10-18 07:00Z · updated 2026-10-18 10:04Z · json

Sources · 2

  1. 2026-06-12
    CVE-2026-45830: ChromaDB allows any authenticated users to arbitrarily read, write, update, or delete data in any tenant's collection
    GitHub Advisory Database · github.com/advisories/GHSA-2wm9-hf6c-p5cr
  2. 2026-06-12
    CVE-2026-45830: A lack of authorization validation in version 0.4.17 or later of the ChromaDB Python project allows any authenticated users to…
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-45830

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