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CVE-2026-4602

n/a / jsrsasign PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
n/a / jsrsasignaffected 0 before 11.1.1
n/a / org.webjars.npm:jsrsasignaffected 0 before *

CWE

CWE-681

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

redhat-SADP

A flaw was found in jsrsasign. A remote attacker can exploit an incorrect conversion between numeric types by providing a negative exponent to the `modPow` function. This vulnerability can force the computation of incorrect modular inverses, which ultimately allows an attacker to bypass signature verification.