sm-crypto Affected by Private Key Recovery in SM2-PKE_CVE-2026-23966

9.1 / 10

CRITICAL

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

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.

Basic Information

ID CVE-2026-23966

Source GitHub_M

Published Jan 22, 2026 at 02:06

Modified Jan 22, 2026 at 15:49

Affected Product

Vendor JuneAndGreen

Product sm-crypto

Version < 0.3.14

Affected Versions JuneAndGreen sm-crypto < 0.3.14

CWE Classification

CWE-345

References

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    "published": "2026-01-22T02:06:54.003Z",
    "modified": "2026-01-22T15:49:07.259Z",
    "type": "cve",
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    "source": "GitHub_M",
    "references": "https://github.com/JuneAndGreen/sm-crypto/security/advisories/GHSA-pgx9-497m-6c4v\nhttps://github.com/JuneAndGreen/sm-crypto/commit/b1c824e58fdf1eaa73692c124a095819a8c45707",
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