CVE-2026-5320 vanna-ai vanna Chat API Endpoint v2 missing authentication
Attackers can access the Chat API endpoint without authentication, potentially reading or modifying data in vanna-ai vanna.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-5320?
CVE-2026-5320 is a medium-severity missing authorization vulnerability in vanna-ai vanna, published on 2 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was detected in vanna-ai vanna up to 2.0.2. Affected by this vulnerability is an unknown functionality of the file /api/vanna/v2/ of the component Chat API Endpoint. Performing a manipulation results in missing authentication. The attack can be initiated remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-5320?
How do I fix CVE-2026-5320?
No fix has been published for CVE-2026-5320 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-5320 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5320 exists.
Sources
Also known as GHSA-j638-g9qc-36f4.