CVE Watch28 jul 2026

CVE-2026-57511

SuperPlane before 0.30.0 contains an SMTP header injection vulnerability that allows unauthenticated attackers to inject arbitrary SMTP head

CVSS

5.4

Medio

EPSS

—

KEV

—

Exploit Today

0-100

Publicado: 28 jul 2026 · Última mod.: 28 jul 2026 · CWE-93

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

SuperPlane before 0.30.0 contains an SMTP header injection vulnerability that allows unauthenticated attackers to inject arbitrary SMTP headers by including CRLF sequences in the event payload title field delivered via webhook. Attackers can manipulate the unsanitized title field passed to the SMTP DATA command to add Bcc recipients for content exfiltration, forge the From address to bypass SPF and DKIM checks, or inject Content-Type and MIME boundary headers to corrupt message bodies for phishing.

Referencias oficiales

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