{"id":"CVE-2026-4599","title":"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 …","summary":"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 …","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","cwe":["CWE-1023","CWE-338"],"vendor":"kjur","product":"jsrsasign","affected":["jsrsasign >= 7.0.0, < 11.1.1"],"patched":["jsrsasign 11.1.1"],"published":"2026-03-23","updated":"2026-09-10","sourceUpdated":"2026-09-10T13:20:21.650","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-4599","references":[{"url":"https://gist.github.com/Kr0emer/081681818b51605c91945126d74b4f20","label":"report@snyk.io"},{"url":"https://github.com/kjur/jsrsasign/commit/ee4b013478366cb16cea9a4bdfb218b6077f83b1","label":"report@snyk.io"},{"url":"https://github.com/kjur/jsrsasign/pull/647","label":"report@snyk.io"},{"url":"https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-15812264","label":"report@snyk.io"},{"url":"https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370939","label":"report@snyk.io"},{"url":"https://access.redhat.com/errata/RHSA-2026:19375","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:19409","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:19410","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:6568","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:6720","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:6912","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:6926","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/security/cve/CVE-2026-4599","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2450207","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4599.json","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-4599"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4599"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-03-23T14:39:36.757966Z"},"epss":0.00477,"epssPercentile":0.40206,"ingestedAt":"2026-06-29T13:24:34.811Z","slug":"CVE-2026-4599","body":"## Overview\n\nVersions 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.\n\n## Affected\n\n- `jsrsasign >= 7.0.0, < 11.1.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `jsrsasign 11.1.1`\n\n## Vendor advisories\n\n- **RHSA-2026:19409** · Red Hat · fixed in: Migration Toolkit for Virtualization 2.1 · released 2026-05-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:19409)\n- **RHSA-2026:19410** · Red Hat · fixed in: Migration Toolkit for Virtualization 2.9 · released 2026-05-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:19410)\n- **RHSA-2026:6912** · Red Hat · fixed in: Red Hat Quay 3.10 · released 2026-04-07 · [advisory](https://access.redhat.com/errata/RHSA-2026:6912)\n- **RHSA-2026:6720** · Red Hat · fixed in: Red Hat Quay 3.12 · released 2026-04-06 · [advisory](https://access.redhat.com/errata/RHSA-2026:6720)\n- **RHSA-2026:6568** · Red Hat · fixed in: Red Hat Quay 3.15 · released 2026-04-03 · [advisory](https://access.redhat.com/errata/RHSA-2026:6568)\n- **RHSA-2026:19375** · Red Hat · fixed in: Red Hat Quay 3.16 · released 2026-05-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:19375)\n- **RHSA-2026:6926** · Red Hat · fixed in: Red Hat Quay 3.9 · released 2026-04-07 · [advisory](https://access.redhat.com/errata/RHSA-2026:6926)","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":50.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}