CVE-2026-45833 ChromaDB has a code injection vulnerability
An authenticated attacker with update permissions can execute arbitrary code on the server by sending a malicious model repository with trust_remote_code enabled.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-45833?
CVE-2026-45833 is a critical code injection vulnerability in ChromaDB, published on 12 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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 trust_remote_code set to true in the /api/v2/tenants/default_tenant/databases/default_database/collections/{collection_id} if they have the UPDATE_COLLECTION permission.
Weakness: CWE-94
Which versions are affected by CVE-2026-45833?
3 open source packages ship an affected version, including chromadb. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
chromadb PyPI | From 0.4.17 to 1.5.9 | None |
chromadb PyPI | From 0.4.17 to 1.5.9 | None |
chromadb PyPI | From 0.4.17 to 1.5.9 | None |
Products include Trychroma Chromadb.
How do I fix CVE-2026-45833?
No fix has been published for CVE-2026-45833 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-45833 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-45833 exists.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in ChromaDB
- CVE-2026-45830 ChromaDB allows any authenticated users to arbitrarily read, write, update, or delete data in any tenant's collection
- CVE-2026-45831 ChromaDB's SimpleRBACAuthorizationProvider doesn't check which tenant, database, or collection a permission applies to
- CVE-2026-45832 Auth bypass in ChromaDB
Sources
Also known as GHSA-36p7-vc44-83pf, PYSEC-2026-3814.