{"id":"CVE-2026-116270","aliases":[],"cve":{"records":[{"id":"CVE-2026-116270","source":"CPANSec","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-25T18:05:02.236Z","published":"2026-10-28T17:33:48.187Z","modified":"2026-10-28T17:33:48.187Z"}],"publishers":[{"name":"CPANSec","role":"CNA","organizationId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","modified":"2026-10-28T17:33:48.187Z"}],"references":[{"url":"https://metacpan.org/release/DSKOLL/MIME-tools-5.521/changes","tags":["release-notes"],"source":"CPANSec"}],"weaknesses":[{"id":"CWE-407","description":"CWE-407 Inefficient Algorithmic Complexity","source":"CPANSec"}],"applicability":[],"prioritization":[]},"title":"MIME::Words versions before 5.521 for Perl allow memory exhaustion via repeated \"=?\" sequences in decode_mimewords","titleSource":"CPANSec","descriptionSource":"CPANSec","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.","score":null,"severity":"unknown","published":"2026-10-28T17:33:48.187Z","modified":"2026-10-28T17:33:48.187Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"","name":"MIME-tools","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"5.521","versionType":"custom"}],"defaultStatus":"unaffected","packageURL":"pkg:cpan/MIME-tools","cpes":[],"source":"CPANSec","url":"https://www.cve.org/CVERecord?id=CVE-2026-116270"}],"remediation":[{"text":"Upgrade to MIME-tools 5.521 or later.","source":"CPANSec","url":"https://www.cve.org/CVERecord?id=CVE-2026-116270"}],"references":["https://metacpan.org/release/DSKOLL/MIME-tools-5.521/changes"],"sources":[{"name":"CVE","id":"CVE-2026-116270","modified":"2026-10-28T17:33:48.187Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-116270"}],"assessments":[],"sourceAffected":[],"observedAt":"2026-10-29T14:34:58.783Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T11:20:32.820Z"},"coverage":[{"source":"NVD","status":"no-result","checkedAt":"2026-10-28T18:00:36.249Z","attemptedAt":"2026-10-28T18:00:36.249Z"},{"source":"GHSA","status":"no-result","checkedAt":"2026-10-28T18:00:34.208Z","attemptedAt":"2026-10-28T18:00:34.208Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-28T18:00:34.740Z","attemptedAt":"2026-10-28T18:00:34.740Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-10-28T18:00:34.136Z","attemptedAt":"2026-10-28T18:00:34.136Z"}],"evidence":[{"source":"ENISA EUVD","id":"EUVD-2026-112303","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-112303","modified":"Oct 28, 2026, 5:33:48 PM","checkedAt":"2026-10-28T18:00:34.740Z"}],"aiSummary":null}