{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-48959", "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "state": "PUBLISHED", "assignerShortName": "CPANSec", "dateReserved": "2026-05-26T18:09:32.365Z", "datePublished": "2026-05-27T02:29:07.027Z", "dateUpdated": "2026-05-27T02:29:07.027Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "packageName": "IO-Compress", "product": "IO::Uncompress::Unzip", "programFiles": ["lib/IO/Uncompress/Unzip.pm"], "programRoutines": [{"name": "IO::Uncompress::Unzip::fastForward"}], "repo": "https://github.com/pmqs/IO-Compress", "vendor": "PMQS", "versions": [{"lessThan": "2.220", "status": "affected", "version": "0", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-407", "description": "CWE-407 Inefficient Algorithmic Complexity", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "shortName": "CPANSec", "dateUpdated": "2026-05-27T02:29:07.027Z"}, "references": [{"tags": ["patch"], "url": "https://github.com/pmqs/IO-Compress/commit/68db44076f4c1a86a2ffe53a958eac6cabaf72e2.patch"}, {"tags": ["release-notes"], "url": "https://metacpan.org/release/PMQS/IO-Compress-2.220/changes"}], "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."}], "title": "IO::Uncompress::Unzip versions before 2.220 for Perl allow CPU exhaustion via per-byte read loop in fastForward", "x_generator": {"engine": "cpansec-cna-tool 0.1"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-48959", "lastModified": "2026-05-27T04:16:31.093", "metrics": {}, "published": "2026-05-27T04:16:31.093", "references": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://github.com/pmqs/IO-Compress/commit/68db44076f4c1a86a2ffe53a958eac6cabaf72e2.patch"}, {"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://metacpan.org/release/PMQS/IO-Compress-2.220/changes"}], "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-407"}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "type": "Secondary"}]}

{}

{"created": "2026-05-27T04:30:16.103440+00:00", "updated": "2026-05-27T04:30:16.103451+00:00", "vendors": []}