HarborGuard / CVE
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HIGHCVE-2026-4602Published Modified CNA snyk

CVE-2026-4602: Versions of the package jsrsasign before 11

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 v4.0
8.7
Severity
HIGH
Fixed in
11.1.1
Affected Products
1

Fix available

11.1.1
Affected packages
  • n/a / jsrsasign
    < 11.1.1 (from 0)
CVSS 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