CVE-2026-116265

{"id": "CVE-2026-116265", "cveTags": [], "metrics": {}, "affected": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "affectedData": [{"repo": "https://salsa.debian.org/dskoll/mime-tools", "modules": ["MIME::Field::ParamVal"], "versions": [{"status": "affected", "version": "0", "lessThan": "5.521", "versionType": "custom"}], "packageURL": "pkg:cpan/MIME-tools", "packageName": "MIME-tools", "programFiles": ["lib/MIME/Field/ParamVal.pm"], "collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "programRoutines": [{"name": "MIME::Field::ParamVal::parse_params"}]}]}], "published": "2026-10-28T18:17:12.910", "references": [{"url": "https://metacpan.org/release/DSKOLL/MIME-tools-5.521/changes", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "description": [{"lang": "en", "value": "CWE-436"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-10-29T15:11:53.000", "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}