CVE-2026-23966 | THREATINT

Description

sm-crypto provides JavaScript implementations of the Chinese cryptographic algorithms SM2, SM3, and SM4. A private key recovery vulnerability exists in the SM2 decryption logic of sm-crypto prior to version 0.3.14. By interacting with the SM2 decryption interface multiple times, an attacker can fully recover the private key within approximately several hundred interactions. Version 0.3.14 patches the issue.

PUBLISHED Reserved 2026-01-19 | Published 2026-01-22 | Updated 2026-01-22 | Assigner GitHub_M

CRITICAL: 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Problem types

CWE-345: Insufficient Verification of Data Authenticity

Product status

< 0.3.14

affected

References

github.com/...crypto/security/advisories/GHSA-pgx9-497m-6c4v

github.com/...ommit/b1c824e58fdf1eaa73692c124a095819a8c45707

cve.org (CVE-2026-23966)

nvd.nist.gov (CVE-2026-23966)

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