CVE-2026-42504

7.5 HIGH

Published: June 02, 2026 Modified: June 04, 2026

Description

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

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0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Patch Vendor Advisory Exploit Third Party Advisory

https://go.dev/cl/774481

Source: security@golang.org

https://go.dev/issue/79217

Source: security@golang.org

Source: security@golang.org

Source: security@golang.org

4 reference(s) from NVD

CVSS v3 Score

7.5 / 10.0

EPSS (Exploit Probability)

0.1%

18th percentile

Exploitation Status

Not in CISA KEV

CWE-407