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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-4602 Detail

Description

Versions of the package jsrsasign before 11.1.1 are vulnerable to Incorrect Conversion between Numeric Types due to handling negative exponents in ext/jsbn2.js. An attacker can force the computation of incorrect modular inverses and break signature verification by calling modPow with a negative exponent.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  Snyk
CVSS-BT 7.7 HIGH
Vector:  CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://gist.github.com/Kr0emer/7ecd2be7d17419e4677315ef3758faf5 Snyk Exploit  Mitigation  Third Party Advisory 
https://github.com/kjur/jsrsasign/commit/5ea1c32bb2aa894b4bd29849839afe4f98728195 Snyk Patch 
https://github.com/kjur/jsrsasign/pull/650 Snyk Issue Tracking 
https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15371175 Snyk Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-681 Incorrect Conversion between Numeric Types Snyk  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-4602
NVD Published Date:
03/23/2026
NVD Last Modified:
03/23/2026
Source:
Snyk