CVE-2026-42504

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CVSS 3.1

7.5 high

EPSS

<1%p45

Published

Jun 2, 2026 (Jun 2, 2026)

Modified

Jul 22, 2026

Description

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.

Weakness: CWE-407
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (0.6%)

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