CVE-2026-118691 (GCVE-0-2026-118691)

Vulnerability from cvelistv5 – Published: 2026-10-28 21:11 – Updated: 2026-11-03 17:01
VLAI
Title
xianyu-auto-reply-fix through 2.0.7 Unauthenticated Message Sending via /send-message
Summary
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.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-03 17:01 UTC
CWE
  • CWE-1188 - Initialization of a Resource with an Insecure Default
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7439 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
GuDong2003 xianyu-auto-reply-fix Affected: 0 , ≤ 2.0.7 (semver)
guessed Create a notification for this product.
Date Public
2026-10-22 00:00
Credits
hieuPenguinnn
Show details on NVD website
To clipboard 

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