{"affected":[{"defaultStatus":"unaffected","ecosystem":"https://cpan.org/modules","packageName":"IO-Compress","product":"IO::Uncompress::Unzip","source":"CNA: CPANSec","vendor":"PMQS","versions":[{"lessThan":"2.220","status":"affected","version":"0","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","versionType":"custom"}]}],"cveId":"CVE-2026-48959","cwes":["CWE-407"],"description":"IO::Uncompress::Unzip versions before 2.220 for Perl allow CPU exhaustion via per-byte read loop in fastForward.\n\nfastForward() compares length $offset (the digit count of the offset, 1 to 19) against the chunk size $c instead of $offset itself, so $c shrinks from 16 KiB to 1-19 bytes per iteration.\n\nExtracting a named entry from an attacker supplied zip via IO::Uncompress::Unzip->new($zip, Name => $target) drives a per-byte read loop scaling with the entry's compressed size, up to the non-Zip64 4 GiB cap.","epss":{"date":"2026-11-09","percentile":0.4649,"score":0.00553},"exploits":[],"kev":null,"metrics":[{"score":7.5,"severity":"high","source":"ADP: CISA-ADP","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1794314854524,"publishedAt":1779848947027,"references":[{"source":"CNA: CPANSec","tags":["patch"],"url":"https://github.com/pmqs/IO-Compress/commit/68db44076f4c1a86a2ffe53a958eac6cabaf72e2.patch"},{"source":"CNA: CPANSec","tags":["release-notes"],"url":"https://metacpan.org/release/PMQS/IO-Compress-2.220/changes"},{"source":"ADP: CVE","tags":[],"url":"http://www.openwall.com/lists/oss-security/2026/05/27/2"},{"source":"ADP: siemens-SADP","tags":[],"url":"https://cert-portal.siemens.com/productcert/html/ssa-457936.html"}],"remediation":[{"kind":"fix","source":"CNA: CPANSec","text":"Upgrade to IO-Compress 2.220 or later."},{"kind":"fix","source":"CNA: CPANSec","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/pmqs/IO-Compress/commit/68db44076f4c1a86a2ffe53a958eac6cabaf72e2.patch"}],"revision":"a0ac21de0050c70cf4151a629dbf56b05325c8a2b05d4f49ed83af68f6dfea46","sources":[{"modifiedAt":1794314854524,"name":"CNA: CPANSec","retrievedAt":1794316662528,"url":"https://www.cve.org/CVERecord?id=CVE-2026-48959"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794316684781,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-48959"}],"ssvc":{"assessedAt":1780069809916,"automatable":"yes","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"IO::Uncompress::Unzip versions before 2.220 for Perl allow CPU exhaustion via per-byte read loop in fastForward","updatedAt":1794316684781}