CVE-2026-4602 HIGH

CVE-2026-4602

Vendor N/A
Product jsrsasign
Weakness CWE-681
Published March 23, 2026
Last update June 30, 2026
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 23, 2026 CVE published
June 30, 2026 Record updated