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CVE-2026-4599

Published: Mar 23, 2026Updated: Jul 20, 2026 Sources: CVE List NVDCWE-1023
9.1CRITICAL
NVD MITRE
EPSS Score
0.5%
Top 61.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-1023CWE-338

Affected Products

kjur
oss-project·JP
jsrsasignLibrary
OSS Libraries / generic-library
and 2 more affected products View all →

Exploitability

Official Patch Available
Workaround Available
Is your org exposed to CVE-2026-4599?We can run the check for you — a free external exposure review, no install. Check my exposure

References

https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370939
security.snyk.io
https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-15812264
security.snyk.io
https://gist.github.com/Kr0emer/081681818b51605c91945126d74b4f20
gist.github.com
and 12 more references View all →

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