{"schema":"threatline.record/2","record":{"id":"CVE-2026-116265","aliases":[],"summary":"MIME::Field::ParamVal versions before 5.521 for Perl do not flag an ambiguous multipart boundary written as RFC 2231 continuations","details":"MIME::Field::ParamVal versions before 5.521 for Perl do not flag an ambiguous multipart boundary written as RFC 2231 continuations.\n\nThe boundary ambiguity checks look only at a plain boundary= parameter, and a boundary split into RFC 2231 sections (boundary*0=, boundary*1= and so on) is joined after they have run. A repeated section number is concatenated rather than reported as a duplicate. From version 5.518, an encoded word or trailing whitespace in such a boundary also goes unflagged, although multipart_boundary() decodes or strips it.\n\nA remote sender can make MIME::Parser split a message on a different boundary than other mail readers, hiding an attachment from a filter that relies on ambiguous_content() while the recipient's mail client shows it.","categories":["Unclassified"],"product":"","vendor":"","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-116265","source_modified_at":"2026-10-28T17:32:11.827Z","fetched_at":"2026-10-28T20:58:01.013507Z","product":null,"vendor":null,"versions":[{"lessThan":"5.521","status":"affected","version":"0","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-116265","source_modified_at":"2026-10-28T17:32:11.827Z","fetched_at":"2026-10-28T20:58:01.013507Z","package":{"name":null,"ecosystem":null},"version":"5.521","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-28T17:32:11.827Z","modified_at":"2026-10-28T17:32:11.827Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-116265","fetched_at":"2026-10-28T20:58:01.013507Z","source_modified_at":"2026-10-28T17:32:11.827Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://metacpan.org/release/DSKOLL/MIME-tools-5.521/changes","tags":["release-notes"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-28T17:32:11.827Z","content_hash":"6675d775d582c5717aa8b01f0d56ee20a344843777071cb21ced0730c902ffc3"}}