Description

sm-crypto provides JavaScript implementations of the Chinese cryptographic algorithms SM2, SM3, and SM4. A signature forgery vulnerability exists in the SM2 signature verification logic of sm-crypto prior to version 0.4.0. Under default configurations, an attacker can forge valid signatures for arbitrary public keys. If the message space contains sufficient redundancy, the attacker can fix the prefix of the message associated with the forged signature to satisfy specific formatting requirements. Version 0.4.0 patches the issue.

INFO

Published Date :

2026-01-22T02:05:43.426Z

Last Modified :

2026-01-22T15:58:10.585Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-23965 vulnerability.

Vendors Products
Juneandgreen
  • Sm-crypto
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-23965.

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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Privileges Required
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