Threat Intelligence / CVE / CVE-2026-45829

CVE-2026-45829 — Chroma ChromaDB

CVSS v4.0 10 (Critical, derived from score) · EPSS 0.1% (higher than 37.6% of all scored CVEs) · Priority 6.5/10 · Published 2026-05-18

As of 2026-05-19, CVE-2026-45829 is a Critical-severity (band derived from the CVSS v4.0 score, not stated by the CNA) vulnerability in Chroma ChromaDB, CVSS v4.0 10, EPSS 0.1% (37.6th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-45829, most recently “ChromaDB CVE-2026-45829 "ChromaToast" — Pre-Auth RCE via trust_remote_code Hugging Face Model Load in FastAPI Server (HiddenLayer)”.

Last updated: 2026-05-19

What is CVE-2026-45829?

A pre-authentication, code injection vulnerability in version 1.0.0 or later of the ChromaDB Python project allows an unauthenticated 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/{tenant}/databases/{db}/collections endpoint.

The record classifies CVE-2026-45829 under weakness class CWE-94. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 117 days ago.

Severity and exploitation probability

CVSS v4.0 base score: 10 — Critical (derived from score)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
EPSS (FIRST): 0.1% probability of exploitation in the next 30 days, higher than 37.6% of all scored CVEs
CISA KEV: Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority: 6.5/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published: 2026-05-18, last modified 2026-05-19

Is CVE-2026-45829 being exploited?

It currently carries a trending score of 15 in the Threadlinqs vulnerability feed.

Affected products and versions

Chroma: ChromaDB

How to fix CVE-2026-45829

No vendor patch reference has been recorded for CVE-2026-45829 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

Threat activity tracking CVE-2026-45829

1 tracked threat in the Threadlinqs corpus references CVE-2026-45829, either in the campaign’s CVE list or as an indicator on the campaign record.

ChromaDB CVE-2026-45829 "ChromaToast" — Pre-Auth RCE via trust_remote_code Hugging Face Model Load in FastAPI Server (HiddenLayer) — CRITICAL · 2026-05-21

Sources

Seeded from cveorg and not yet processed by the Threadlinqs enrichment pipeline, so blank CVSS, EPSS or KEV fields above mean NOT MEASURED rather than measured-absent.

Full detection coverage & IOCs for threats exploiting CVE-2026-45829 are available via the Threadlinqs MCP server (Purple tier). View plans →

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