{"id":"CVE-2026-110759","state":"PUBLISHED","title":"Text::CSV_XS versions before 1.65 for Perl return a 0xFF byte that is not in the input for an empty last field followed by a lone CR in parse","description":"Text::CSV_XS versions before 1.65 for Perl return a 0xFF byte that is not in the input for an empty last field followed by a lone CR in parse.\n\nWhen the input to parse ends in a separator and a lone CR, the parser treats the end of the input as the next character and stores the end-of-file marker in the field as the byte 0xFF. With binary set, parse(\"a,\\r\") returns the fields \"a\" and \"\\xFF\". On UTF-8 flagged input the last field is a UTF-8 flagged string holding that lone byte, which is malformed UTF-8. The same input with a non-empty last field is rejected as an error.\n\nA CRLF file read line by line and chomped ends this way when its last column is empty, so the application receives a byte that is not in its input.","publishedAt":"2026-10-16T22:08:23.781Z","updatedAt":"2026-10-20T18:36:33.803Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"CPANSec","products":["Text-CSV_XS"],"affected":[{"packageName":"Text-CSV_XS","packageURL":"pkg:cpan/Text-CSV_XS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.65","versionType":"custom"}],"collectionURL":"https://cpan.org/modules","modules":["Text::CSV_XS"],"programFiles":["CSV_XS.xs"],"programRoutines":[{"name":"Text::CSV_XS::parse"}],"repo":"https://github.com/cpan-authors/Text-CSV_XS"}],"references":["https://github.com/cpan-authors/Text-CSV_XS/commit/7627f1a2bb8ffe4e81d9847318a060822043f7f3.patch","https://metacpan.org/release/HMBRAND/Text-CSV_XS-1.65/changes"],"weaknesses":["CWE-1286"],"ingestedAt":"2026-10-29T20:10:33.477Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/110xxx/CVE-2026-110759.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-110759","state":"PUBLISHED","datePublished":"2026-10-16T22:08:23.781Z","dateUpdated":"2026-10-20T18:36:33.803Z","assignerShortName":"CPANSec","assignerOrgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","dateReserved":"2026-10-14T17:07:54.223Z"},"containers":{"cna":{"title":"Text::CSV_XS versions before 1.65 for Perl return a 0xFF byte that is not in the input for an empty last field followed by a lone CR in parse","descriptions":[{"lang":"en","value":"Text::CSV_XS versions before 1.65 for Perl return a 0xFF byte that is not in the input for an empty last field followed by a lone CR in parse.\n\nWhen the input to parse ends in a separator and a lone CR, the parser treats the end of the input as the next character and stores the end-of-file marker in the field as the byte 0xFF. With binary set, parse(\"a,\\r\") returns the fields \"a\" and \"\\xFF\". On UTF-8 flagged input the last field is a UTF-8 flagged string holding that lone byte, which is malformed UTF-8. The same input with a non-empty last field is rejected as an error.\n\nA CRLF file read line by line and chomped ends this way when its last column is empty, so the application receives a byte that is not in its input."}],"affected":[{"packageName":"Text-CSV_XS","packageURL":"pkg:cpan/Text-CSV_XS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.65","versionType":"custom"}],"collectionURL":"https://cpan.org/modules","modules":["Text::CSV_XS"],"programFiles":["CSV_XS.xs"],"programRoutines":[{"name":"Text::CSV_XS::parse"}],"repo":"https://github.com/cpan-authors/Text-CSV_XS"}],"references":[{"url":"https://github.com/cpan-authors/Text-CSV_XS/commit/7627f1a2bb8ffe4e81d9847318a060822043f7f3.patch","tags":["patch"]},{"url":"https://metacpan.org/release/HMBRAND/Text-CSV_XS-1.65/changes","tags":["release-notes"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1286","description":"CWE-1286 Improper Validation of Syntactic Correctness of Input","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"CPANSec","orgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","dateUpdated":"2026-10-16T22:08:23.781Z"},"solutions":[{"lang":"en","value":"Upgrade to Text-CSV_XS 1.65 or later."}],"source":{"discovery":"UNKNOWN"},"timeline":[{"lang":"en","time":"2026-10-14T00:00:00.000Z","value":"Fix committed to upstream repository."},{"lang":"en","time":"2026-10-15T00:00:00.000Z","value":"Version 1.65 released with fix."}],"x_generator":{"engine":"cpansec-cna-tool 0.1"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.8,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-10-20T18:36:05.228830Z","id":"CVE-2026-110759","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-20T18:36:33.803Z"}}]}}}