GitHub Advisoryadvisory · npm

GHSA-qv7w-v773-3xqm sm-crypto Affected by Signature Malleability in SM2-DSA

HIGH Published 2026-01-21 Modified 2026-01-22 Official page ↗
Aliases
CVE-2026-23967
Ecosystem
npm
Packages
sm-crypto
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weaknesses
CWE-347
Reviewed
2026-01-21

Affected packages

• npm sm-crypto: < 0.3.14 → fixed in 0.3.14

Description

Summary A signature malleability vulnerability exists in the SM2 signature verification logic of the sm-crypto library. An attacker can derive a new valid signature for a previously signed message from an existing signature. Credit This vulnerability was discovered by: • XlabAI Team of Tencent Xuanwu Lab • Atuin Automated Vulnerability Discovery Engine

Related

Alias · CVE (1)

  • CVE-2026-23967 sm-crypto provides JavaScript implementations of the Chinese cryptographic algorithms SM2, SM3, and SM4. vulnerability

Weakness · CWE (1)

  • CWE-347 Improper Verification of Cryptographic Signature weakness

References