{"id":"CVE-2026-116269","aliases":[],"cve":{"records":[{"id":"CVE-2026-116269","source":"CPANSec","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-25T18:05:02.236Z","published":"2026-10-28T17:33:22.332Z","modified":"2026-10-28T17:33:22.332Z"}],"publishers":[{"name":"CPANSec","role":"CNA","organizationId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","modified":"2026-10-28T17:33:22.332Z"}],"references":[{"url":"https://metacpan.org/release/DSKOLL/MIME-tools-5.521/changes","tags":["release-notes"],"source":"CPANSec"}],"weaknesses":[{"id":"CWE-436","description":"CWE-436 Interpretation Conflict","source":"CPANSec"}],"applicability":[],"prioritization":[]},"title":"MIME::Field::ParamVal versions before 5.521 for Perl turn an RFC 2231 filename with a hyphenated language tag into an empty recommended filename","titleSource":"CPANSec","descriptionSource":"CPANSec","description":"MIME::Field::ParamVal versions before 5.521 for Perl turn an RFC 2231 filename with a hyphenated language tag into an empty recommended filename.\n\nA parameter such as filename*=utf-8'en-US'payload.exe is converted to an encoded word with the language tag appended to the charset. The decoder strips the language suffix only when it is a single word, so it cannot resolve the charset UTF-8*EN-US and returns an empty string. The recommended_filename() method returns that empty string rather than falling back to the name parameter.\n\nOther mail readers return payload.exe. A remote sender can get an attachment past a policy that checks file extensions on the recommended filename.","score":null,"severity":"unknown","published":"2026-10-28T17:33:22.332Z","modified":"2026-10-28T17:33:22.332Z","withdrawn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-2026-116269"}],"remediation":[{"text":"Upgrade to MIME-tools 5.521 or later.","source":"CPANSec","url":"https://www.cve.org/CVERecord?id=CVE-2026-116269"}],"references":["https://metacpan.org/release/DSKOLL/MIME-tools-5.521/changes"],"sources":[{"name":"CVE","id":"CVE-2026-116269","modified":"2026-10-28T17:33:22.332Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-116269"}],"assessments":[],"sourceAffected":[],"observedAt":"2026-10-29T14:34:58.783Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T03:00:34.533Z"},"coverage":[{"source":"NVD","status":"no-result","checkedAt":"2026-10-28T18:00:40.217Z","attemptedAt":"2026-10-28T18:00:40.217Z"},{"source":"GHSA","status":"no-result","checkedAt":"2026-10-28T18:00:36.676Z","attemptedAt":"2026-10-28T18:00:36.676Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-28T18:00:37.543Z","attemptedAt":"2026-10-28T18:00:37.543Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-10-28T18:00:36.759Z","attemptedAt":"2026-10-28T18:00:36.759Z"}],"evidence":[{"source":"ENISA EUVD","id":"EUVD-2026-112301","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-112301","modified":"Oct 28, 2026, 5:33:22 PM","checkedAt":"2026-10-28T18:00:37.543Z"}],"aiSummary":{"text":"MIME::Field::ParamVal versions before 5.521 for Perl may return an empty recommended filename for an RFC 2231 filename with a hyphenated language tag, potentially bypassing file extension checks. A remote sender can exploit this. The recommended_filename() method is affected.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T08:49:16.801Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-116269"}]}}