# ChromaDB has a code injection vulnerability

Advisory record · `GHSA-36p7-vc44-83pf`

- **Identifiers:** `GHSA-36p7-vc44-83pf` · `CVE-2026-45833` · `PYSEC-2026-3814`
- **State:** Confirmed
- **Severity:** CVSS 9.4 Critical
- **Critical:** Yes: CVSS 9+
- **Weakness (CWE):** [CWE-94](https://cwe.mitre.org/data/definitions/94.html)
- **Tags:** [Code injection](https://agentprime.io/advisories/tag/code-injection.md)
- **Published:** 12 Jun 2026
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 12 Jun 2026, 18:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- CVSS score 9.4: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected packages

- `chromadb` (PyPI): affected `>=0.4.17, <=1.5.9`; no fixed version yet

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> ChromaDB (chromadb) versions 0.4.17 through 1.5.9 are affected. An authenticated attacker with the UPDATE_COLLECTION permission can send a malicious model repository with trust_remote_code set to true to a collection update endpoint, which allows arbitrary code execution on the server. No fixed version is listed.

Written 1 Nov 2026.

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 9.4 Critical, CVSS 4.0: `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`, from CNA (HiddenLayer)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0043, the 38th percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:10 UTC: First seen by agentprime
- 31 Oct 2026, 14:10 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-36p7-vc44-83pf)

## Sources

- [GitHub Advisory Database: GHSA-36p7-vc44-83pf](https://github.com/advisories/GHSA-36p7-vc44-83pf)
- [OSV: GHSA-36p7-vc44-83pf](https://osv.dev/vulnerability/GHSA-36p7-vc44-83pf)
- <https://nvd.nist.gov/vuln/detail/CVE-2026-45833>
- <https://access.redhat.com/security/cve/CVE-2026-45833>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2488430>
- <https://github.com/chroma-core/chroma>
- <https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45833.json>
- <https://www.hiddenlayer.com/sai-security-advisory/2026-06-chromadb-5>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-36p7-vc44-83pf>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-36p7-vc44-83pf/>. Everything for agents: <https://agentprime.io/llms.txt>.