CVE-2026-5321 PUBLISHED

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

Assigner: VulDB
Reserved: 01.04.2026 Published: 02.04.2026 Updated: 02.04.2026

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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
CVSS Score: 5.3

Product Status

Vendor vanna-ai
Product vanna
Versions
  • Version 2.0.0 is affected
  • Version 2.0.1 is affected
  • Version 2.0.2 is affected

Credits

  • Yu_Bao (VulDB User) reporter
  • VulDB coordinator

References

Problem Types

  • Permissive Cross-domain Policy with Untrusted Domains CWE
  • Origin Validation Error CWE