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-JS-JSRSASIGN-15370938	Third Party Advisory

Configurations

Configuration 1 (hide)

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

History

23 Mar 2026, 16:18

Type	Values Removed	Values Added
CPE		cpe:2.3:a:jsrsasign_project:jsrsasign::::::node.js::*
References	~~() https://gist.github.com/Kr0emer/a1bf5cd4547cc630d2dcc5e761de8264 -~~	() https://gist.github.com/Kr0emer/a1bf5cd4547cc630d2dcc5e761de8264 - Exploit, Mitigation, Third Party Advisory
References	~~() https://github.com/kjur/jsrsasign/commit/ca5b027240287a1e71fe63019fc4400332594323 -~~	() https://github.com/kjur/jsrsasign/commit/ca5b027240287a1e71fe63019fc4400332594323 - Patch
References	~~() https://github.com/kjur/jsrsasign/pull/648 -~~	() https://github.com/kjur/jsrsasign/pull/648 - Issue Tracking
References	~~() https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370938 -~~	() https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370938 - Third Party Advisory
First Time		Jsrsasign Project Jsrsasign Project jsrsasign

23 Mar 2026, 06:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-23 06:16

Updated : 2026-03-23 16:18

NVD link : CVE-2026-4598

Mitre link : CVE-2026-4598

CVE.ORG link : CVE-2026-4598

JSON object : View

Products Affected

jsrsasign_project

jsrsasign

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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