CVE-2026-126807 · Other
NO FIX YET · SEE WHAT TO DO
WuzAPI through 1.1.0 has a GetHistory handler flaw that lets any logged-in user see other tenants' chat metadata. An attacker with message history enabled can list every user's internal ID, stored chat JIDs and last-message times via GET /chat/history with chat_jid=index.
first public Nov 11, 2026 · 1 source
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Teams running WuzAPI, a WhatsApp API gateway, with multiple tenants and message history enabled. Single-tenant deployments where all users are trusted are less exposed. The sources do not say whether the flaw is reachable from the internet by default.
Not affected if message-history-disabled, single-tenant
Who cares multi-tenant, self-hosted, whatsapp, wuzapi
1.1.0.WuzAPI through 1.1.0 contains a cross-tenant information disclosure vulnerability in the GetHistory handler that allows authenticated users to view other tenants' chat metadata. Attackers with message history enabled can request GET /chat/history with chat_jid=index to list every user's internal ID, stored chat JIDs, and last-message times.
This page as .md · .json · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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