CVE-2026-4599

9.1 CRITICAL
Published: March 23, 2026 Modified: March 23, 2026
View on NVD

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://gist.github.com/Kr0emer/081681818b51605c91945126d74b4f20
Source: report@snyk.io
Exploit Mitigation Third Party Advisory
https://github.com/kjur/jsrsasign/pull/647
Source: report@snyk.io
Issue Tracking
https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370939
Source: report@snyk.io
Third Party Advisory

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.1 / 10.0
EPSS (Exploit Probability)
0.0%
11th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

jsrsasign_project