Security Advisory

CVE-2026-4603

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-03-23 05:00:14

Last updated 2026-03-23 14:42:16

Assigner snyk

State PUBLISHED

Description

Versions of the package jsrsasign before 11.1.1 are vulnerable to Division by zero due to the RSASetPublic/KEYUTIL parsing path in ext/rsa.js and the BigInteger.modPowInt reduction logic in ext/jsbn.js. An attacker can force RSA public-key operations (e.g., verify and encryption) to collapse to deterministic zero outputs and hide “invalid key” errors by supplying a JWK whose modulus decodes to zero.

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