CVE-2026-5321

MEDIUM 4.3

vanna-ai vanna FastAPI/Flask Server cross-domain policy

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-942 CWE-346
Vendor	vanna-ai
Product	vanna
Published	Apr 2, 2026
Last Updated	Apr 2, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

vanna-ai / vanna

2.0.0 2.0.1 2.0.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/354653 vuldb.com: https://vuldb.com/vuln/354653/cti vuldb.com: https://vuldb.com/submit/780729 github.com: https://github.com/August829/CVEP/issues/14

Credits

🔍 Yu_Bao (VulDB User) VulDB