CVE-2026-5321
vanna-ai vanna FastAPI/Flask Server cross-domain policy
- State
- Published
- Severity
- 5.3 Medium
- Published
- Apr 2, 2026
- Updated
- Apr 2, 2026
- Reserved
- Apr 1, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | 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 | VulDB |
| 3.1 | 4.3 Medium | 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 | VulDB |
| 3.0 | 4.3 Medium | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R | VulDB |
| 2.0 | 4.0 Medium | AV:N/AC:L/Au:S/C:N/I:P/A:N/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
vannavanna-ai |
|
References
- VDB-354653 | vanna-ai vanna FastAPI/Flask Server cross-domain policyvdb-entry
- VDB-354653 | CTI Indicators (IOB, IOC)signaturepermissions-required
- Submit #780729 | vanna-ai vanna 2.0.2 CORS Origin Reflection with Credentialsthird-party-advisory
- https://github.com/August829/CVEP/issues/14exploitissue-tracking
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