要点
- CVE-2026-23966 是影响 sm-crypto (juneandgreen), sm-crypto 的严重 (CVSS 9.1)漏洞。
- 未来 30 天内被利用的概率（EPSS）：0.23%，高于 14.1% 的漏洞。
- 修复：升级到 0.3.14 或更高版本。
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
NVD 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.
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