Auth bypass in Vanna-Ai Vanna
CVE-2026-5320
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.007 (50.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Vanna-Ai Vanna — versions 2.0.0, 2.0.1, 2.0.2
Weakness classification (CWE)
References
- vuldb.com/vuln/354652 (vdb-entry)
- vuldb.com/vuln/354652/cti (signature, permissions-required)
- vuldb.com/submit/780727 (third-party-advisory)
- github.com/August829/CVEP/issues/13 (issue-tracking, exploit)
Frequently asked questions
- What is CVE-2026-5320?
- CVE-2026-5320 is a high-severity vulnerability in Vanna-Ai Vanna, classified under Improper Authentication. CVSS score: 7.3/10. Published 2026-04-02.
- How severe is CVE-2026-5320?
- High severity. CVSS v3 base score is 7.3 out of 10.