CVE-2026-4602
HIGH
jsrsasign_project
NVD
CVSS Score
7.5
Severity
HIGH
Published
Mar 23, 2026
Vendor
jsrsasign_project
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.