Is CVE-2026-121557 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-121557?

CVE-2026-121557 has a CVSS v3 severity of MEDIUM (5.9).

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CVE-2026-121557

Description

WPPConnect Server through 2.10.74 contains a missing authentication vulnerability that allows unauthenticated attackers to send WhatsApp messages by calling the Chatwoot webhook route without verifyToken middleware. Attackers who know or guess a connected session name can POST outgoing message bodies to send arbitrary texts or files from that account to any number.