{"id":78420,"date":"2026-05-13T16:10:35","date_gmt":"2026-05-13T12:40:35","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-8463-cryptargon2-versions-from-0-017-before-0-031-for-perl-perform-a-heap-out-of-bounds-read-in-argon2_verify-on-empty-encoded-input\/"},"modified":"2026-05-13T16:10:35","modified_gmt":"2026-05-13T12:40:35","slug":"cve-2026-8463-cryptargon2-versions-from-0-017-before-0-031-for-perl-perform-a-heap-out-of-bounds-read-in-argon2_verify-on-empty-encoded-input","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-8463-cryptargon2-versions-from-0-017-before-0-031-for-perl-perform-a-heap-out-of-bounds-read-in-argon2_verify-on-empty-encoded-input\/","title":{"rendered":"CVE-2026-8463 &#8211; Crypt::Argon2 versions from 0.017 before 0.031 for Perl perform a heap out-of-bounds read in argon2_verify on empty encoded input"},"content":{"rendered":"<p>CVE ID :CVE-2026-8463<\/p>\n<p>  Published : May 13, 2026, 12:40 p.m. | 2\u00a0hours, 18\u00a0minutes ago<\/p>\n<p>  Description :Crypt::Argon2 versions from 0.017 before 0.031 for Perl perform a heap out-of-bounds read in argon2_verify on empty encoded input.<\/p>\n<p>The auto-detect form of argon2_verify passes encoded_len &#8211; 1 as the length argument to memchr without checking that encoded_len is non-zero. When the encoded string is empty, the size_t subtraction underflows to SIZE_MAX and memchr scans adjacent heap memory looking for a &#8216;$&#8217; separator byte.<\/p>\n<p>A caller that invokes argon2_verify against a stored hash that may legitimately be empty (for example a placeholder row or a NULL column materialised as an empty string) reads out-of-bounds heap memory, which can crash the process or leak the position of an adjacent &#8216;$&#8217; byte into subsequent parsing.<\/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-2026-8463 Published : May 13, 2026, 12:40 p.m. | 2\u00a0hours, 18\u00a0minutes ago Description :Crypt::Argon2 versions from 0.017 before 0.031 for Perl perform a heap out-of-bounds read in argon2_verify on empty encoded input. The auto-detect form of argon2_verify passes encoded_len &#8211; 1 as the length argument to memchr without checking that encoded_len is non-zero. &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-78420","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/78420","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=78420"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/78420\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=78420"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=78420"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=78420"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}