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Public proof of concept

CVE-2026-45829

A public proof of concept exists; no exploitation attested.

  • Published2026-05-18
  • WeaknessCWE-502 · CWE-94

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2026-05-1817:16CVE publishedNVD
  2. 2026-10-2319:23First public proof of conceptPoC-in-GitHub

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-45829?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-45829?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

OSV
chromadb
BranchAffectedFixed in
1.x≥ 1.0.0, ≤ 1.5.9no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

No fix published by the sources we read yet. NVD record

Detection

read 2026-10-23 19:25 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
2 repositories, unverifiedfevar54/FULL-ANALYSIS---CVE-2026-45829-ChromaDB-0xBlackash/CVE-2026-45829
PoC-in-GitHub

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionpoc2026-05-19
  • OpenCVESSVC decisionpoc—
  • CNACVSS 4.010read 2026-10-23
  • CNACVSS 3.110read 2026-10-23
  • CNAweakness (CWE)CWE-502, CWE-94read 2026-10-23
  • FIRST EPSSEPSS score1.4 %2026-10-23
  • PoC-in-GitHubproof of concept2read 2026-10-23
  • OSVaffected packages—

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS 4.0 vector
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
2026-05-18
Last Modified
2026-07-15
NVD status
Awaiting Analysis

Frequently asked questions

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.

Is CVE-2026-45829 actively exploited?

A proof-of-concept exploit exists for CVE-2026-45829, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-45829?

CVE-2026-45829 has a CVSS v3 base score of 10 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

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