{"id":"CVE-2026-4599","aliases":["GHSA-5jx8-q4cp-rhh6"],"url":"https://o3.security/vulnerability/CVE-2026-4599","summary":"jsrsasign: Incomplete Comparison Allows DSA Private Key Recovery via Biased Nonce Generation","details":"Versions of the package jsrsasign from 7.0.0 and before 11.1.1 are vulnerable to Incomplete Comparison with Missing Factors via the getRandomBigIntegerZeroToMax and getRandomBigIntegerMinToMax functions in src/crypto-1.1.js; an attacker can recover the private key by exploiting the incorrect compareTo checks that accept out-of-range candidates and thus bias DSA nonces during signature generation.","published":"2026-03-23T05:00:12.522Z","modified":"2026-08-04T03:32:44.122515557Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"jsrsasign","fixedVersion":"11.1.1"}],"fix":{"url":"https://github.com/kjur/jsrsasign/commit/ee4b013478366cb16cea9a4bdfb218b6077f83b1","label":"kjur/jsrsasign@ee4b013"},"references":[{"type":"WEB","url":"https://gist.github.com/Kr0emer/081681818b51605c91945126d74b4f20"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4599.json"},{"type":"WEB","url":"https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-15812264"},{"type":"WEB","url":"https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370939"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19375"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19409"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19410"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:6568"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:6720"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:6912"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:6926"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-4599"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4599.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4599"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2450207"},{"type":"FIX","url":"https://github.com/kjur/jsrsasign/commit/ee4b013478366cb16cea9a4bdfb218b6077f83b1"},{"type":"FIX","url":"https://github.com/kjur/jsrsasign/pull/647"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-04T03:32:44.122515557Z"}}