CVE-2026-23966— sm-crypto Affected by Private Key Recovery in SM2-PKE
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I. Basic Information for CVE-2026-23966
Vulnerability Information
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Vulnerability Title
sm-crypto Affected by Private Key Recovery in SM2-PKE
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
对数据真实性的验证不充分
Source: NVD (National Vulnerability Database)
Vulnerability Title
sm-crypto 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
sm-crypto是june01个人开发者的一个加密算法。 sm-crypto 0.3.14之前版本存在数据伪造问题漏洞，该漏洞源于SM2解密逻辑存在缺陷，可能导致私钥恢复。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
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Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| JuneAndGreen | sm-crypto | < 0.3.14 | - |
II. Public POCs for CVE-2026-23966
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · JuneAndGreen · 2026-01-22 · 3 CVEs total
| CVE-2026-23965 | 7.5 HIGH | sm-crypto Affected by Signature Forgery in SM2-DSA |
| CVE-2026-23967 | 7.5 HIGH | sm-crypto Affected by Signature Malleability in SM2-DSA |
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V. Comments for CVE-2026-23966
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