{"id":81404,"date":"2026-07-02T21:25:12","date_gmt":"2026-07-02T17:55:12","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-58465-eclipse-wakaama-coap-block1-handler-unbounded-memory-allocation-dos\/"},"modified":"2026-07-02T21:25:12","modified_gmt":"2026-07-02T17:55:12","slug":"cve-2026-58465-eclipse-wakaama-coap-block1-handler-unbounded-memory-allocation-dos","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-58465-eclipse-wakaama-coap-block1-handler-unbounded-memory-allocation-dos\/","title":{"rendered":"CVE-2026-58465 &#8211; Eclipse Wakaama CoAP Block1 Handler Unbounded Memory Allocation DoS"},"content":{"rendered":"<p>CVE ID :CVE-2026-58465<\/p>\n<p>  Published : July 2, 2026, 5:55 p.m. | 1\u00a0hour, 51\u00a0minutes ago<\/p>\n<p>  Description :Eclipse Wakaama before snapshot\/2026-05-26 contains an unbounded memory allocation vulnerability in the CoAP Block1 handler within coap\/block.c that allows unauthenticated remote attackers to exhaust server memory by sending a sequence of Block1 PUT requests with incrementing block numbers. Attackers can target the registration endpoint over UDP without authentication, causing the server to repeatedly reallocate a growing accumulation buffer by appending each block payload without enforcing any maximum total size limit, resulting in denial of service through memory exhaustion.<\/p>\n<p>  Severity: 8.7 | HIGH<\/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-2026-58465 Published : July 2, 2026, 5:55 p.m. | 1\u00a0hour, 51\u00a0minutes ago Description :Eclipse Wakaama before snapshot\/2026-05-26 contains an unbounded memory allocation vulnerability in the CoAP Block1 handler within coap\/block.c that allows unauthenticated remote attackers to exhaust server memory by sending a sequence of Block1 PUT requests with incrementing block numbers. Attackers can &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-81404","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/81404","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=81404"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/81404\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=81404"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=81404"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=81404"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}