| Title | vanna-ai vanna 2.0.2 CORS Origin Reflection with Credentials |
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| Description | Vanna <= 2.0.2 contains a CORS misconfiguration in its FastAPI and Flask server implementations. The server reflects any Origin request header value into the Access-Control-Allow-Origin response header while simultaneously setting Access-Control-Allow-Credentials: true. This allows an attacker-controlled website to make authenticated cross-origin requests to the Vanna API on behalf of a victim user, potentially leading to unauthorized data access. |
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| Source | ⚠️ https://github.com/August829/CVEP/issues/14 |
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| User | Yu_Bao (UID 89348) |
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| Submission | 03/16/2026 10:19 (5 months ago) |
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| Moderation | 04/01/2026 15:00 (16 days later) |
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| Status | Accepted |
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| VulDB entry | 354653 [vanna-ai vanna up to 2.0.2 FastAPI/Flask Server cross-domain policy] |
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| Points | 20 |
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