{"id":"CVE-2026-46542","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-46542","generatedAt":"2026-10-28T09:42:09.353Z","title":"Prior to version 1.4.0, a denial-of-service vulnerability exists in the Ed25519 multisig delinearization code path.","description":"Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.4.0, a denial-of-service vulnerability exists in the Ed25519 multisig delinearization code path. Ed25519PublicKey::delinearize() in keys/src/multisig/mod.rs called .unwrap() on curve point decompression, which panics when a public key is constructed from 32 bytes that do not represent a valid point on the Ed25519 curve. Ed25519PublicKey construction only validates byte length, not curve membership, so invalid keys can reach the delinearization path and crash the hosting process. This issue has been patched in version 1.4.0.","published":"2026-06-10T00:16:55.000Z","lastModified":"2026-07-23T09:10:00.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":4.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L"},"cwe":["CWE-617"],"affected":[],"epss":{"score":0.00231,"percentile":0.13876,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.23%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/nimiq/core-rs-albatross/pull/3713","source":"security-advisories@github.com"},{"url":"https://github.com/nimiq/core-rs-albatross/releases/tag/v1.4.0","source":"security-advisories@github.com"},{"url":"https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-h9cc-w26m-j342","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46542","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}