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CVE-2026-42193

Plunk: SNS webhook forgery

CVSS 9.1 CRITICALEPSS 0.1%CWE-347
Vexday Risk Score
28Bajo
Decisión SSVC (CISA)
Track
Sin señal de explotación → monitorear
CVSS 9.1EPSS 0.1%KEV nãoPoC Nuclei Metasploit Patch
Ciclo de vida
08 may 2026Publicada en NVD
Recomendación: Monitorear — sin señal de explotación por ahora.
Plunk is an open-source email platform built on top of AWS SES. Prior to version 0.9.0, the /webhooks/sns endpoint accepts Amazon SNS notification payloads from unauthenticated requests without verifying the SNS signature, certificate, or topic ARN, meaning anyone can forge a valid-looking webhook request. This allows an unauthenticated attacker to spoof SNS events to trigger workflow automations, unsubscribe contacts, manipulate email delivery metrics, and potentially exhaust billing credits. This issue has been patched in version 0.9.0.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Productos afectados
useplunk · plunk

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