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., modInverse(0, m) or modInverse(-1, m)).
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XKjur Jsrsasign
APPKjur< 11.1.1
🔵
CHECK WITH VENDOR
No clear patch data available. Check vendor references.
References
Related vulnerabilities
CVE-2026-4599CRITICAL9.3PL ✓same product
Odtworzenie klucza prywatnego DSA przez błąd porównań w jsrsasign
CVE-2021-30246CRITICAL9.1PL ✓same product
Błędna weryfikacja podpisów RSA PKCS#1 v1.5 w jsrsasign
CVE-2020-14968CRITICAL9.8PL ✓same product
Błąd weryfikacji podpisu RSA-PSS w bibliotece jsrsasign (Node.js)
CVE-2020-14967CRITICAL9.8PL ✓same product
Błąd weryfikacji szyfrogramu RSA PKCS1 v1.5 w bibliotece jsrsasign
CVE-2026-4600HIGH8.1same product
Versions of the package jsrsasign before 11.1.1 are vulnerable to Improper Verification of Cryptographic Signa...