{"id":78902,"date":"2026-05-27T07:46:31","date_gmt":"2026-05-27T04:16:31","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-48959-iouncompressunzip-versions-before-2-220-for-perl-allow-cpu-exhaustion-via-per-byte-read-loop-in-fastforward\/"},"modified":"2026-05-27T07:46:31","modified_gmt":"2026-05-27T04:16:31","slug":"cve-2026-48959-iouncompressunzip-versions-before-2-220-for-perl-allow-cpu-exhaustion-via-per-byte-read-loop-in-fastforward","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-48959-iouncompressunzip-versions-before-2-220-for-perl-allow-cpu-exhaustion-via-per-byte-read-loop-in-fastforward\/","title":{"rendered":"CVE-2026-48959 &#8211; IO::Uncompress::Unzip versions before 2.220 for Perl allow CPU exhaustion via per-byte read loop in fastForward"},"content":{"rendered":"<p>CVE ID :CVE-2026-48959<\/p>\n<p>  Published : May 27, 2026, 4:16 a.m. | 15\u00a0minutes ago<\/p>\n<p>  Description :IO::Uncompress::Unzip versions before 2.220 for Perl allow CPU exhaustion via per-byte read loop in fastForward.<\/p>\n<p>fastForward() compares length $offset (the digit count of the offset, 1 to 19) against the chunk size $c instead of $offset itself, so $c shrinks from 16 KiB to 1-19 bytes per iteration.<\/p>\n<p>Extracting a named entry from an attacker supplied zip via IO::Uncompress::Unzip-&gt;new($zip, Name =&gt; $target) drives a per-byte read loop scaling with the entry&#8217;s compressed size, up to the non-Zip64 4 GiB cap.<\/p>\n<p>  Severity: 0.0 | NA<\/p>\n<p>  Visit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID :CVE-2026-48959 Published : May 27, 2026, 4:16 a.m. | 15\u00a0minutes ago Description :IO::Uncompress::Unzip versions before 2.220 for Perl allow CPU exhaustion via per-byte read loop in fastForward. fastForward() 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 &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-78902","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/78902","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=78902"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/78902\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=78902"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=78902"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=78902"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}