jsrsasign: Negative Exponent Handling Leads to Signature Verification Bypass

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...

EUVD-2026-14371

Versions of the package jsrsasign before 11.1.1 are vulnerable to Infinite loop via the bnModInverse function in ext/jsbn2.js when the BigInteger.modInverse implementation receives zero or negative inputs, allowing an attacker to hang the process permanently by supplying such crafted values e.g.,...

GHSA-8QWJ-4JXW-M8JW jsrsasign: Negative Exponent Handling Leads to Signature Verification Bypass

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...

GHSA-8G7P-JF3G-GXCP jsrsasign is vulnerable to DoS through Infinite Loop when processing zero or negative inputs

Versions of the package jsrsasign before 11.1.1 are vulnerable to Infinite loop via the bnModInverse function in ext/jsbn2.js when the BigInteger.modInverse implementation receives zero or negative inputs, allowing an attacker to hang the process permanently by supplying such crafted values e.g.,...

EUVD-2026-14379

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...

CVE-2026-4602

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...

CVE-2026-4598

Versions of the package jsrsasign before 11.1.1 are vulnerable to Infinite loop via the bnModInverse function in ext/jsbn2.js when the BigInteger.modInverse implementation receives zero or negative inputs, allowing an attacker to hang the process permanently by supplying such crafted values e.g.,...

CVE-2026-4598

Versions of the package jsrsasign before 11.1.1 are vulnerable to Infinite loop via the bnModInverse function in ext/jsbn2.js when the BigInteger.modInverse implementation receives zero or negative inputs, allowing an attacker to hang the process permanently by supplying such crafted values e.g.,...

CVE-2026-4598

CVE-2026-4598 affects the JavaScript crypto library jsrsasign. Versions before 11.1.1 are vulnerable to an infinite loop in bnModInverse (ext/jsbn2.js) when BigInteger.modInverse receives zero or negative inputs, allowing a process to hang. The issue is caused by input handling in modInverse, lea...

CVE-2026-4598

Versions of the package jsrsasign before 11.1.1 are vulnerable to Infinite loop via the bnModInverse function in ext/jsbn2.js when the BigInteger.modInverse implementation receives zero or negative inputs, allowing an attacker to hang the process permanently by supplying such crafted values e.g.,...

CVE-2026-4598

Versions of the package jsrsasign before 11.1.1 are vulnerable to Infinite loop via the bnModInverse function in ext/jsbn2.js when the BigInteger.modInverse implementation receives zero or negative inputs, allowing an attacker to hang the process permanently by supplying such crafted values e.g.,...

CVE-2026-4598

Versions of the package jsrsasign before 11.1.1 are vulnerable to Infinite loop via the bnModInverse function in ext/jsbn2.js when the BigInteger.modInverse implementation receives zero or negative inputs, allowing an attacker to hang the process permanently by supplying such crafted values e.g.,...

CVE-2026-4602

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...

CVE-2026-4602

CVE-2026-4602 affects the npm package jsrsasign prior to 11.1.1. The root cause is incorrect conversion between numeric types due to handling negative exponents in ext/jsbn2.js, which can cause modPow with a negative exponent and lead to incorrect modular inverses and broken signature verificatio...

CVE-2026-4602

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...

CVE-2026-4602

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...

CVE-2026-4602

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...

PT-2026-27058

Name of the Vulnerable Software and Affected Versions jsrsasign versions prior to 11.1.1 Description Incorrect Conversion between Numeric Types occurs due to the handling of negative exponents in the file ext/jsbn2.js. An attacker can force the computation of incorrect modular inverses and break...

jsrsasign 安全漏洞

jsrsasign is a signature verification library developed by Kenji Urushima. Versions of jsrsasign prior to 11.1.1 contained security vulnerabilities. These vulnerabilities stemmed from the bnModInverse function in ext/jsbn2.js, which could cause infinite loops when processing zero or negative...

PT-2026-27054

Name of the Vulnerable Software and Affected Versions jsrsasign versions prior to 11.1.1 Description An infinite loop occurs via the bnModInverse function in ext/jsbn2.js when the BigInteger.modInverse implementation receives zero or negative inputs. This allows an attacker to permanently hang th...