{"id":"CVE-2026-48961","state":"PUBLISHED","title":"IO::Compress versions from 2.207 before 2.220 for Perl ship a zipdetails CLI tool that crashes with undefined subroutine on Info-ZIP Unix Extra Field with 8-byte UID or GID","description":"IO::Compress versions from 2.207 before 2.220 for Perl ship a zipdetails CLI tool that crashes with undefined subroutine on Info-ZIP Unix Extra Field with 8-byte UID or GID.\n\nWhen decode_ux() in bin/zipdetails handles an Info-ZIP Unix Extra Field (tag 0x7875) with UID Size or GID Size set to 8, causing zipdetails to decode an 8-byte UID or GID value, it dispatches through decodeLitteEndian(), which calls a misnamed helper unpackValueQ. The actual function defined in the same file is unpackValue_Q (with underscore); the call raises 'Undefined subroutine &main::unpackValueQ' and the script exits with status 255.\n\nLibrary callers of IO::Compress and IO::Uncompress are not affected; the defect is in the bundled CLI tool.","publishedAt":"2026-05-27T02:34:52.228Z","updatedAt":"2026-05-29T15:52:06.965Z","severity":{"score":7.3,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","source":"CISA-ADP"},"assigner":"CPANSec","products":["PMQS IO::Compress"],"affected":[{"vendor":"PMQS","product":"IO::Compress","packageName":"IO-Compress","defaultStatus":"unaffected","versions":[{"version":"2.207","status":"affected","lessThan":"2.220","versionType":"custom"}],"collectionURL":"https://cpan.org/modules","programFiles":["bin/zipdetails"],"programRoutines":[{"name":"main::decode_ux"},{"name":"main::decodeLitteEndian"}],"repo":"https://github.com/pmqs/IO-Compress"}],"references":["https://github.com/pmqs/IO-Compress/commit/33c89d03d6e746ed2ead4f2f6570d47864c61bc7.patch","https://metacpan.org/release/PMQS/IO-Compress-2.220/changes","http://www.openwall.com/lists/oss-security/2026/05/27/3"],"weaknesses":["CWE-755"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/48xxx/CVE-2026-48961.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-48961","state":"PUBLISHED","datePublished":"2026-05-27T02:34:52.228Z","dateUpdated":"2026-05-29T15:52:06.965Z","assignerShortName":"CPANSec","assignerOrgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","dateReserved":"2026-05-26T18:09:32.365Z"},"containers":{"cna":{"title":"IO::Compress versions from 2.207 before 2.220 for Perl ship a zipdetails CLI tool that crashes with undefined subroutine on Info-ZIP Unix Extra Field with 8-byte UID or GID","descriptions":[{"lang":"en","value":"IO::Compress versions from 2.207 before 2.220 for Perl ship a zipdetails CLI tool that crashes with undefined subroutine on Info-ZIP Unix Extra Field with 8-byte UID or GID.\n\nWhen decode_ux() in bin/zipdetails handles an Info-ZIP Unix Extra Field (tag 0x7875) with UID Size or GID Size set to 8, causing zipdetails to decode an 8-byte UID or GID value, it dispatches through decodeLitteEndian(), which calls a misnamed helper unpackValueQ. The actual function defined in the same file is unpackValue_Q (with underscore); the call raises 'Undefined subroutine &main::unpackValueQ' and the script exits with status 255.\n\nLibrary callers of IO::Compress and IO::Uncompress are not affected; the defect is in the bundled CLI tool."}],"affected":[{"vendor":"PMQS","product":"IO::Compress","packageName":"IO-Compress","defaultStatus":"unaffected","versions":[{"version":"2.207","status":"affected","lessThan":"2.220","versionType":"custom"}],"collectionURL":"https://cpan.org/modules","programFiles":["bin/zipdetails"],"programRoutines":[{"name":"main::decode_ux"},{"name":"main::decodeLitteEndian"}],"repo":"https://github.com/pmqs/IO-Compress"}],"references":[{"url":"https://github.com/pmqs/IO-Compress/commit/33c89d03d6e746ed2ead4f2f6570d47864c61bc7.patch","tags":["patch"]},{"url":"https://metacpan.org/release/PMQS/IO-Compress-2.220/changes","tags":["release-notes"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-755","description":"CWE-755 Improper Handling of Exceptional Conditions","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"CPANSec","orgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","dateUpdated":"2026-05-27T02:47:42.472Z"},"solutions":[{"lang":"en","value":"Upgrade to IO-Compress 2.220 or later."}],"source":{"discovery":"UNKNOWN"},"timeline":[{"lang":"en","time":"2026-05-14T00:00:00.000Z","value":"Issue reported."},{"lang":"en","time":"2026-05-16T00:00:00.000Z","value":"Version 2.220 released."}],"x_generator":{"engine":"cpansec-cna-tool 0.1"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/05/27/3"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-05-27T07:24:57.566Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.3,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","integrityImpact":"LOW","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"LOW","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-05-29T15:51:41.495552Z","id":"CVE-2026-48961","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-29T15:52:06.965Z"}}]}}}