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2.2.1 Webhook Signature Verification Bypass QQ Feishu","CVE":"CVE-2026-85621","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"85621","Ordinal":"1","NoteData":"LobeChat (LobeHub) 2.2.1 does not properly verify inbound chat-platform webhook signatures in the QQ and Feishu adapters. 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