{"id":78673,"date":"2026-05-21T01:46:36","date_gmt":"2026-05-20T22:16:36","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-40092-nimiq-keys-unchecked-ed25519-signature-length-in-taggedpublickeyverify-causes-remote-node-panic-via-dht\/"},"modified":"2026-05-21T01:46:36","modified_gmt":"2026-05-20T22:16:36","slug":"cve-2026-40092-nimiq-keys-unchecked-ed25519-signature-length-in-taggedpublickeyverify-causes-remote-node-panic-via-dht","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-40092-nimiq-keys-unchecked-ed25519-signature-length-in-taggedpublickeyverify-causes-remote-node-panic-via-dht\/","title":{"rendered":"CVE-2026-40092 &#8211; nimiq-keys: Unchecked Ed25519 signature length in TaggedPublicKey::verify causes remote node panic via DHT"},"content":{"rendered":"<p>CVE ID :CVE-2026-40092<\/p>\n<p>  Published : May 20, 2026, 10:16 p.m. | 42\u00a0minutes ago<\/p>\n<p>  Description :nimiq-blockchain provides persistent block storage for Nimiq&#8217;s Rust implementation. In versions 1.3.0 and below, a malicious network peer can crash any Nimiq full node by publishing a crafted Kademlia DHT record. The maliciously crafted record would contain a TaggedSigned with a signature field whose byte length is not exactly 64 in order to cause a crash. When the victim node&#8217;s DHT verifier calls TaggedSigned::verify, execution reaches Ed25519Signature::from_bytes(sig).unwrap() in the TaggedPublicKey implementation for Ed25519PublicKey. The from_bytes call fails because ed25519_zebra::Signature::try_from rejects slices not 64 bytes, and the unwrap() panics. The BLS TaggedPublicKey implementation correctly returns false on error; only the Ed25519 implementation panics. This issue has been fixed in version 1.4.0.<\/p>\n<p>  Severity: 7.5 | 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-2026-40092 Published : May 20, 2026, 10:16 p.m. | 42\u00a0minutes ago Description :nimiq-blockchain provides persistent block storage for Nimiq&#8217;s Rust implementation. In versions 1.3.0 and below, a malicious network peer can crash any Nimiq full node by publishing a crafted Kademlia DHT record. The maliciously crafted record would contain a TaggedSigned with a &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-78673","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/78673","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=78673"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/78673\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=78673"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=78673"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=78673"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}