CVE-2026-45833Public exploitNetwork attack vector

Authenticated code execution via unguarded remote model loading

Published Jun 12, 2026 · Updated Jun 12, 2026

Code injection in Chroma ChromaDB 0.4.17 and later allows remote authenticated users to execute arbitrary server-side code. The update_collection path passes attacker-controlled sentence-transformer configuration to build_from_config(), which loads a named Hugging Face model with trust_remote_code enabled. UPDATE_COLLECTION permission and the Python server backend are required; successful exploitation runs the model repository's code in the server process.

CVSS severity9.4
Critical
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Chroma ChromaDB 0.4.17 and later allows remote authenticated users to execute arbitrary server-side code. The update_collection path passes attacker-controlled sentence-transformer configuration to build_from_config(), which loads a named Hugging Face model with trust_remote_code enabled. UPDATE_COLLECTION permission and the Python server backend are required; successful exploitation runs the model repository's code in the server process.

The record

CVE
CVE-2026-45833
Published
Jun 12, 2026
Updated
Jun 12, 2026
Vendor
Chroma
Product
ChromaDB
Classifications
CWE-94, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.4.17 <=*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Chroma · ChromaDBversion=0.4.17 <=*

Published CVSS scores

9.4HiddenLayerCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
7.5Red HatCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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