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Vulnerabilities CVE-2026-42504

CVE-2026-42504

None
Open
TLP:CLEAR

Quadratic complexity in WordDecoder.DecodeHeader in mime

NVD CVE.org

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Description

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

Details

EPSS Score ⓘ
0.56%

43.8th percentile

Confidence
90%
Published
Jun 2, 2026
Last Modified
Aug 13, 2026
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