CVE-2026-23966

CRITICAL9.1

sm-crypto Affected by Private Key Recovery in SM2-PKE

Published Jan 22, 2026

Modified 1 months ago

Details

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.

References

WEB

https://github.com/JuneAndGreen/sm-crypto/commit/b1c824e58fdf1eaa73692c124a095819a8c45707

WEB

https://github.com/JuneAndGreen/sm-crypto/security/advisories/GHSA-pgx9-497m-6c4v

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-23966

CVSS Analysis

CVSS v3.1

9.1

Exploitability

Attack Vector