{"id":79103,"date":"2026-05-31T23:46:30","date_gmt":"2026-05-31T20:16:30","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-8796-serealdecoder-versions-before-5-005-for-perl-allow-heap-out-of-bounds-read-via-crafted-input\/"},"modified":"2026-05-31T23:46:30","modified_gmt":"2026-05-31T20:16:30","slug":"cve-2026-8796-serealdecoder-versions-before-5-005-for-perl-allow-heap-out-of-bounds-read-via-crafted-input","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-8796-serealdecoder-versions-before-5-005-for-perl-allow-heap-out-of-bounds-read-via-crafted-input\/","title":{"rendered":"CVE-2026-8796 &#8211; Sereal::Decoder versions before 5.005 for Perl allow heap out-of-bounds read via crafted input"},"content":{"rendered":"<p>CVE ID :CVE-2026-8796<\/p>\n<p>  Published : May 31, 2026, 8:16 p.m. | 16\u00a0minutes ago<\/p>\n<p>  Description :Sereal::Decoder versions before 5.005 for Perl allow heap out-of-bounds read via crafted input.<\/p>\n<p>In Perl\/Decoder\/srl_decoder.c, srl_read_object() and srl_read_hash() process a COPY tag, a back-reference whose target byte the decoder re-decodes as a fresh tag. When that target byte matches the SHORT_BINARY pattern (an inline string whose length is encoded in the low bits of the tag), the resulting read is not bounded to precede the COPY tag&#8217;s own offset and can run past the end of the input buffer. An attacker controlled COPY offset can land inside a previously decoded value rather than on a tag boundary, planting a byte that the decoder reads as a SHORT_BINARY tag and consuming up to 31 following bytes from the heap as a class name (OBJECT path) or hash key (HASH path).<\/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-2026-8796 Published : May 31, 2026, 8:16 p.m. | 16\u00a0minutes ago Description :Sereal::Decoder versions before 5.005 for Perl allow heap out-of-bounds read via crafted input. In Perl\/Decoder\/srl_decoder.c, srl_read_object() and srl_read_hash() process a COPY tag, a back-reference whose target byte the decoder re-decodes as a fresh tag. When that target byte matches the SHORT_BINARY &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-79103","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/79103","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=79103"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/79103\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=79103"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=79103"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=79103"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}