CVE-2026-5321
MEDIUMvanna-ai vanna FastAPI/Flask Server cross-domain policy
Title source: cnaDescription
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.
References (4)
Core 4
Core References
Vdb Entry vdb-entry
VDB-354653 | vanna-ai vanna FastAPI/Flask Server cross-domain policy
https://vuldb.com/vuln/354653
Signature, Permissions Required signature
permissions-required
VDB-354653 | CTI Indicators (IOB, IOC)
https://vuldb.com/vuln/354653/cti
Third Party Advisory third-party-advisory
Submit #780729 | vanna-ai vanna 2.0.2 CORS Origin Reflection with Credentials
https://vuldb.com/submit/780729
Exploit exploit
issue-tracking
https://github.com/August829/CVEP/issues/14
Scores
CVSS v3
4.3
EPSS
0.0016
EPSS Percentile
5.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-346
CWE-942
Status
published
Products (3)
vanna-ai/vanna
2.0.0
vanna-ai/vanna
2.0.1
vanna-ai/vanna
2.0.2
Published
Apr 02, 2026
Tracked Since
Apr 02, 2026