CVE-2026-4598

Versions of the package jsrsasign before 11.1.1 are vulnerable to Infinite loop via the bnModInverse function in ext/jsbn2.js when the BigInteger.modInverse implementation receives zero or negative inputs, allowing an attacker to hang the process permanently by supplying such crafted values (e.g., modInverse(0, m) or modInverse(-1, m)).

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://gist.github.com/Kr0emer/a1bf5cd4547cc630d2dcc5e761de8264	Exploit Mitigation Third Party Advisory
https://github.com/kjur/jsrsasign/commit/ca5b027240287a1e71fe63019fc4400332594323	Patch
https://github.com/kjur/jsrsasign/pull/648	Issue Tracking
https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-15812263
https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370938	Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:19375
https://access.redhat.com/errata/RHSA-2026:19409
https://access.redhat.com/errata/RHSA-2026:19410
https://access.redhat.com/errata/RHSA-2026:22840
https://access.redhat.com/errata/RHSA-2026:23361
https://access.redhat.com/errata/RHSA-2026:6568
https://access.redhat.com/errata/RHSA-2026:6720
https://access.redhat.com/security/cve/CVE-2026-4598
https://bugzilla.redhat.com/show_bug.cgi?id=2450210
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4598.json

Configurations

Configuration 1 (hide)

cpe:2.3:a:kjur:jsrsasign:*:*:*:*:*:node.js:*:*

History

No history.

Information

Published : 2026-03-23 06:16

Updated : 2026-09-10 13:20

NVD link : CVE-2026-4598

Mitre link : CVE-2026-4598

CVE.ORG link : CVE-2026-4598

JSON object : View

Products Affected

kjur

jsrsasign

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

CWE-1287

Improper Validation of Specified Type of Input

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"value": "Versions of the package jsrsasign before 11.1.1 are vulnerable to Infinite loop via the bnModInverse function in ext/jsbn2.js when the BigInteger.modInverse implementation receives zero or negative inputs, allowing an attacker to hang the process permanently by supplying such crafted values (e.g., modInverse(0, m) or modInverse(-1, m))."}, {"lang": "es", "value": "Versiones del paquete jsrsasign anteriores a la 11.1.1 son vulnerables a un bucle infinito a trav\u00e9s de la funci\u00f3n bnModInverse en ext/jsbn2.js cuando la implementaci\u00f3n de BigInteger.modInverse recibe entradas cero o negativas, permitiendo a un atacante colgar el proceso permanentemente al suministrar dichos valores manipulados (p. ej., modInverse(0, m) o modInverse(-1, m))."}], "lastModified": "2026-09-10T13:20:20.940", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:kjur:jsrsasign:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "46D62CE4-1F1B-44DF-BFAB-86FE57D7A194", "versionEndExcluding": "11.1.1"}], "operator": "OR"}]}], "sourceIdentifier": "report@snyk.io"}