{"schema":"threatline.record/2","record":{"id":"CVE-2026-116264","aliases":[],"summary":"MIME::Field::ParamVal versions before 5.521 for Perl allow one invalid Content-Type parameter to hide the parameters after it, including the multipart boundary","details":"MIME::Field::ParamVal versions before 5.521 for Perl allow one invalid Content-Type parameter to hide the parameters after it, including the multipart boundary.\n\nParameter parsing stops at the first parameter whose name it cannot read, such as x:y=1 or a name containing an 8-bit byte, and drops every parameter after it. When the boundary is among them, MIME::Parser keeps the multipart body as a single undecoded part without marking the parse as ambiguous.\n\nMail readers that skip the invalid parameter still find the boundary. A remote sender can hide 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-2026-116264","source_modified_at":"2026-10-28T17:31:52.187Z","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-2026-116264","source_modified_at":"2026-10-28T17:31:52.187Z","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":"2026-10-28T17:31:52.187Z","modified_at":"2026-10-28T17:31:52.187Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-116264","fetched_at":"2026-10-28T20:58:01.013507Z","source_modified_at":"2026-10-28T17:31:52.187Z"}],"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":"2026-10-28T17:31:52.187Z","content_hash":"d8b9c5efed0f38c333105f354d95ca3331238bb25fe72a1960b604590e54d5d0"}}