CVE-2026-5320: vanna-ai vanna Chat API Endpoint v2 missing authentication

Severity: high (CVSS 7.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-02 · updated 2026-06-17
Weakness: CWE-287

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.

Affected products

vanna-ai vanna: 2.0.0, 2.0.1, 2.0.2

References

https://github.com/August829/CVEP/issues/13
https://vuldb.com/submit/780727
https://vuldb.com/vuln/354652
https://vuldb.com/vuln/354652/cti

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