Description

Baileys is a cocket-based TS/JavaScript API for WhatsApp Web. In versions prior to both 6.7.22 and 7.0.0-rc12, any Baileys session can be sent a malicious payload via the placeholderResendMessage and trigger a fake messages.upsert event with a fake message key and payload. This allows anyone to spoof messages. The same exploit also allows an attacker to corrupt the app state sync system by sending fake key shares, and also allows for history sync spoofing which also serves the same problem, injecting fake previous context or "on-demand" sync. This issue has been fixed in versions 6.7.22 and 7.0.0-rc12.

Severity (CVSS)

Base score9.3
SeverityCritical
VersionCVSS 4.0
VectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Provided byCNA

Weaknesses

  • CWE-290 — CWE-290: Authentication Bypass by Spoofing
  • CWE-345 — CWE-345: Insufficient Verification of Data Authenticity
  • CWE-346 — CWE-346: Origin Validation Error

Affected products

VendorProductVersions
WhiskeySocketsBaileys< 6.7.22; >= 7.0.0-rc.1, < 7.0.0-rc12
WhiskeySockets@whiskeysockets/baileys< 6.7.22; >= 7.0.0-rc.1, < 7.0.0-rc12

References

Authoritative sources

This page is a snapshot. For the latest enrichment and updates, view the record on CVE.org or the NVD.

Generated from the official CVE List on 04 Aug 2026 07:02 UTC.