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CVE PROGRAM SOURCE RECORD6.3 Medium

CVE-2026-118691

xianyu-auto-reply-fix through 2.0.7 Unauthenticated Message Sending via /send-message

Description

xianyu-auto-reply-fix through 2.0.7 contains a missing authorization vulnerability in the POST /send-message endpoint that allows unauthenticated attackers to send messages from other users' accounts using publicly known default API secrets. Attackers can supply the hard-coded api_key and another user's cookie_id, plus chosen chat_id, to_user_id and message values, to send arbitrary Xianyu messages to buyers from that merchant account.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

GuDong2003 xianyu-auto-reply-fix

Default version status: unaffected

  • 0 to ≤ 2.0.7affected

References