CVE-2026-4599

CRITICAL 9.1

CVSS Score

9.1

EPSS Score

0.5%

EPSS Percentile

38th

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.

CWE	CWE-1023
Vendor	n/a
Product	jsrsasign
Published	Mar 23, 2026
Last Updated	Jul 20, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

n/a / jsrsasign

7.0.0 < 11.1.1

n/a / org.webjars.npm:jsrsasign

8.0.12 < *

References

NVD ↗ CVE.org ↗ EPSS Data ↗

Credits

Kr0emer