CVE-2026-4602

HighCVSS 7.5/10Last modified Sep 10, 2026

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

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-681

Affected software

No affected versions have been published.

Timeline

Published
Mar 23, 2026
Last modified
Sep 10, 2026
NVD status
Modified

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CVE-2026-4602: High severity, CVSS 7.5 | Vulnix