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.

INFO

Published Date :

2026-03-23T05:00:10.567Z

Last Modified :

2026-03-23T14:37:39.558Z

Source :

snyk
AFFECTED PRODUCTS

The following products are affected by CVE-2026-4602 vulnerability.

Vendors Products
Jsrsasign Project
  • Jsrsasign
Kjur
  • Jsrsasign
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-4602.

URL Resource
https://gist.github.com/Kr0emer/7ecd2be7d17419e4677315ef3758faf5 cve-icon cve-icon cve-icon
https://github.com/kjur/jsrsasign/commit/5ea1c32bb2aa894b4bd29849839afe4f98728195 cve-icon cve-icon cve-icon
https://github.com/kjur/jsrsasign/pull/650 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-4602 cve-icon
https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15371175 cve-icon cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-4602 cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact