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sjcl vulnerabilities

Vulnerabilities published for sjcl in the last 30 days: 0. Listed in the KEV catalogue: 0.

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Vulnerability: 1

  1. CVE-2026-4258

    High · CVSS 8.7EPSS 0.26%Fix available

    CVE-2026-4258

    Versions of the package sjcl before 1.0.9 are vulnerable to Improper Verification of Cryptographic Signature due to missing point-on-curve validation in sjcl.ecc.basicKey.publicKey(). An attacker can recover a victim's ECDH private key by sending crafted off-curve public keys and observing ECDH outputs. The dhJavaEc() function directly returns the raw x-coordinate of the scalar multiplication result (no hashing), providing a plaintext oracle without requiring any decryption feedback.

    sjclNode.js
    • Update to 1.0.9
    Published Updated
    Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗

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