{"id":"CVE-2026-116270","published":"2026-10-28T18:17:13.470","lastModified":"2026-10-28T18:17:13.470","description":"MIME::Words versions before 5.521 for Perl allow memory exhaustion via repeated \"=?\" sequences in decode_mimewords.\n\nFor 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.\n\nFrom 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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-407"],"vendors":[],"products":[],"references":[{"url":"https://metacpan.org/release/DSKOLL/MIME-tools-5.521/changes","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}