CVE-2026-4599

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.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://gist.github.com/Kr0emer/081681818b51605c91945126d74b4f20	Exploit Mitigation Third Party Advisory
https://github.com/kjur/jsrsasign/commit/ee4b013478366cb16cea9a4bdfb218b6077f83b1	Patch
https://github.com/kjur/jsrsasign/pull/647	Issue Tracking
https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-15812264
https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370939	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-2026:6568
https://access.redhat.com/errata/RHSA-2026:6720
https://access.redhat.com/errata/RHSA-2026:6912
https://access.redhat.com/errata/RHSA-2026:6926
https://access.redhat.com/security/cve/CVE-2026-4599
https://bugzilla.redhat.com/show_bug.cgi?id=2450207
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4599.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-2026-4599

Mitre link : CVE-2026-4599

CVE.ORG link : CVE-2026-4599

JSON object : View

Products Affected

kjur

jsrsasign

CWE

CWE-1023

Incomplete Comparison with Missing Factors

CWE-338

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

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