Cloudanix VulnDB

CVE-2026-116270

None

CVSS

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EPSS

0.2%

Published

Oct 28, 2026

CISA due date

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The record

MIME::Words versions before 5.521 for Perl allow memory exhaustion via repeated "=?" sequences in decode_mimewords. For each "=?" that does not start a complete encoded word, decode_mimewords appends an error message containing the whole input string to $@. A boundary of 8,000 "=?" pairs (16,000 bytes) adds 8,000 copies of itself to $@, about 128 MB. From version 5.518, MIME::Parser decodes every multipart boundary this way, so a remote sender can exhaust the memory of the parsing process with one Content-Type header.

Affected packages

Ecosystem Package Introduced Fixed

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