CVE-2026-4258
CVE-2026-4258
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
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.
CVSS 8.7 · Élevée · EPSS 0,3% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: node
Produits et versions concernés
sjcl
- Versions du logiciel
- ≥ 0, < 1.0.9: Concernée (semver)
Mettez à jour vers 1.0.9
org.webjars.npm:sjcl
- Versions du logiciel
- ≥ 0: Concernée (semver)
Aucun correctif publié
sjcl npm
- Plages de versions concernées
- SEMVER: < 1.0.9
Mettez à jour vers 1.0.9
Sources originales
- https://security.snyk.io/vuln/SNYK-JS-SJCL-15369617
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-15751243
- https://gist.github.com/Kr0emer/2560f98edb10b0b34f2438cd63913c47
- https://github.com/bitwiseshiftleft/sjcl/blob/master/core/ecc.js%23L454-L461
- https://github.com/bitwiseshiftleft/sjcl/commit/ee307459972442a17beebc29dc331fffd8aff796
- https://nvd.nist.gov/vuln/detail/CVE-2026-4258