---
title: "CVE-2026-45833: ChromaDB has a code injection vulnerability"
url: https://erroneo.us/security/cve/CVE-2026-45833/
description: "CVE-2026-45833 (chromadb (PyPI)): A code injection vulnerability in version 0.4.17 or later of the ChromaDB Python project allows an authenticated attacker…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-06-12
date_modified: 2026-08-24
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-45833"
kev: false
cvss: 9.4
epss: 0.00626
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-45833: ChromaDB has a code injection vulnerability

**Signal:** Critical, preconditions apply. Severe if exploited, but exploitation needs conditions that may not apply to you. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.6% , percentile 49: FIRST’s model estimates a 0.6% chance of exploitation activity in the next 30 days, higher than 49% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Needs an account (low (any account)). Exposure depends on who can log in.
- Only applies if your dependency tree includes chromadb (PyPI) >= 0.4.17, <= 1.5.9, no fixed version listed . Check your lockfile, including transitive dependencies.

## What it is

A code injection vulnerability in version 0.4.17 or later of the ChromaDB Python project allows an authenticated attacker to run arbitrary code on the server by sending a malicious model repository and trustremotecode set to true in the /api/v2/tenants/defaulttenant/databases/defaultdatabase/collections/{collectionid} if they have the UPDATECOLLECTION permission.

## Affected packages

- PyPI `chromadb` >= 0.4.17, <= 1.5.9 → fixed: none listed

## Affected products (CVE record)

- Chroma ChromaDB: 0.4.17 <= *

## Severity

- HiddenLayer CVSS 4.0: 9.4 `CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`
- redhat-SADP CVSS 3.1: 7.5 `CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`
- GitHub CVSS 4.0: 9.4 `CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.63% probability of exploitation activity in the next 30 days; percentile 49.

## Sources

- [GitHub Advisory GHSA-36p7-vc44-83pf](https://github.com/advisories/GHSA-36p7-vc44-83pf)
- [CVE.org record CVE-2026-45833](https://www.cve.org/CVERecord?id=CVE-2026-45833)
- [NVD entry CVE-2026-45833](https://nvd.nist.gov/vuln/detail/CVE-2026-45833)
- [hiddenlayer.com](https://www.hiddenlayer.com/sai-security-advisory/2026-06-chromadb-5)
- [access.redhat.com](https://access.redhat.com/security/cve/CVE-2026-45833)
- [RHBZ#2488430](https://bugzilla.redhat.com/show_bug.cgi?id=2488430)
- [security.access.redhat.com](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45833.json)

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Source page: https://erroneo.us/security/cve/CVE-2026-45833/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt