What is GHSA-pgx9-497m-6c4v?

GHSA-pgx9-497m-6c4v is a security advisory published by GitHub Security Advisories with Critical severity. sm-crypto Affected by Private Key Recovery in SM2-PKE

Which CVE IDs does GHSA-pgx9-497m-6c4v cover?

GHSA-pgx9-497m-6c4v covers the following CVE IDs: CVE-2026-23966. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-pgx9-497m-6c4v?

GHSA-pgx9-497m-6c4v has a CVSS v3 base score of 9.1, published by GitHub Security Advisories.

Which products are affected by GHSA-pgx9-497m-6c4v?

GHSA-pgx9-497m-6c4v affects 1 product, including: npm/sm-crypto:\u003c 0.3.14.

GHSA-pgx9-497m-6c4vCriticalCVSS 9.1

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

Vendor

GitHub Security Advisories

Published

January 21, 2026

Last Modified

January 22, 2026

🔗 CVE IDs covered (1)

CVE-2026-23966 →

📋 Description

Summary

A private key recovery vulnerability exists in the SM2 decryption logic of sm-crypto. By interacting with the SM2 decryption interface multiple times, an attacker can fully recover the private key within approximately several hundred interactions.

Credit

This vulnerability was discovered by:

XlabAI Team of Tencent Xuanwu Lab
Atuin Automated Vulnerability Discovery Engine

🎯 Affected products1

npm/sm-crypto:< 0.3.14

🔗 References (4)

https://github.com/JuneAndGreen/sm-crypto/security/advisories/GHSA-pgx9-497m-6c4v
https://github.com/JuneAndGreen/sm-crypto/commit/b1c824e58fdf1eaa73692c124a095819a8c45707
https://nvd.nist.gov/vuln/detail/CVE-2026-23966
https://github.com/advisories/GHSA-pgx9-497m-6c4v