CVE Watch4 sept 2026

CVE-2026-85621

LobeChat (LobeHub) 2.2.1 does not properly verify inbound chat-platform webhook signatures in the QQ and Feishu adapters. The webhook route

CVSS

6.5

Medio

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 4 sept 2026 · Última mod.: 4 sept 2026 · CWE-345

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

LobeChat (LobeHub) 2.2.1 does not properly verify inbound chat-platform webhook signatures in the QQ and Feishu adapters. The webhook route (/api/agent/webhooks/:platform) is unauthenticated by design and delegates verification to each adapter; the QQ adapter performs no Ed25519 signature verification on dispatched message events, and the Feishu adapter only performs an optional static-token comparison that is skipped when no token is configured (the default) and is not a body signature. An unauthenticated attacker who knows the public webhook URL can POST forged inbound messages with an attacker-chosen sender identity and arbitrary text, causing the bot owner's agent to process attacker-controlled input and treat the attacker as a trusted platform sender.

Referencias oficiales

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