Medium 4.3Published Apr 2, 2026

CVE-2026-5321vanna-ai vanna FastAPI/Flask Server cross-domain policy

Updated under an hour ago (Oct 27, 2026, 3:40 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for vanna-ai vanna

Exploited in the last 30 days

A flaw has been found in vanna-ai vanna up to 2.0.2. Affected by this issue is some unknown functionality of the component FastAPI/Flask Server. Executing a manipulation can lead to permissive cross-domain policy with untrusted domains. The attack can be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS: 4.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
Weakness (CWE): CWE-942, CWE-346
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Apr 2, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

vanna-ai vanna vanna_ai:vanna (from the name)	2.0.0; 2.0.1; 2.0.2	CNA record

References

References

https://vuldb.com/vuln/354653	vdb-entry
https://vuldb.com/vuln/354653/cti	signature, permissions-required
https://vuldb.com/submit/780729	third-party-advisory
https://github.com/August829/CVEP/issues/14	exploit, issue-tracking

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.