CVE-2026-5321

MEDIUM

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

Title source: cna

Description

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)

[Vdb Entry] https://vuldb.com/vuln/354653

[Signature, Permissions Required] https://vuldb.com/vuln/354653/cti

[Third Party Advisory] https://vuldb.com/submit/780729

[Exploit] https://github.com/August829/CVEP/issues/14

Scores

CVSS v3 4.3

EPSS 0.0001

EPSS Percentile 0.3%

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