{"id":"CVE-2026-48961","summary":"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","details":"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.","modified":"2026-05-31T03:56:26.190362275Z","published":"2026-05-27T02:34:52.228Z","database_specific":{"cwe_ids":["CWE-755"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48961.json","cna_assigner":"CPANSec"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/05/27/3"},{"type":"WEB","url":"https://cpan.org/modules"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48961.json"},{"type":"ADVISORY","url":"https://metacpan.org/release/PMQS/IO-Compress-2.220/changes"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48961"},{"type":"FIX","url":"https://github.com/pmqs/IO-Compress/commit/33c89d03d6e746ed2ead4f2f6570d47864c61bc7.patch"},{"type":"PACKAGE","url":"https://github.com/pmqs/IO-Compress"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/pmqs/io-compress","events":[{"introduced":"ddfe67584a228877e5d28840da75ff32e435a5e3"},{"fixed":"f1979570091697409f4792e5d401bbf8fb4b20b6"}]}],"versions":["v2.219","v2.218","v2.217","v2.216","v2.215","v2.214","v2.213","v2.212","v2.211","v2.208","v2.207"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-48961.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"}]}