CVE-2026-42504

Published: Jun 2, 2026

Modified: Jun 3, 2026

PUBLISHED

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

Vendor	Product	Versions
Go standard library	mime	affected `0 - < 1.25.11` affected `1.26.0-0 - < 1.26.4`

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