점검 대응높음KEV 미등록
CVE-2026-4258
n/a sjcl, org.webjars.npm:sjcl, stanford javascript crypto library 취약점
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.
- 대응 우선순위
- 점검
- CVSS
- 7.7
- EPSS
- 0.25% 백분위 15.9% · 2026.08.04 기준
- CISA KEV
- 미등록
- 조치 기한
- -
- 공개일
- 2026.03.17