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High · 7.5 CVE-2026-23967 EUVD-2026-3675GHSA-qv7w-v773-3xqm

sm-crypto Affected by Signature Malleability in SM2-DSA

Published Jan 22, 2026 · Updated Jan 22, 2026 · Assigned by GitHub_M

Description

sm-crypto provides JavaScript implementations of the Chinese cryptographic algorithms SM2, SM3, and SM4. A signature malleability vulnerability exists in the SM2 signature verification logic of the sm-crypto library prior to version 0.3.14. An attacker can derive a new valid signature for a previously signed message from an existing signature. Version 0.3.14 patches the issue.

Affected products

VendorProductAffectedFixed
JuneAndGreen sm-crypto < 0.3.14 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm sm-crypto < 0.3.14 0.3.14 GHSA-qv7w-v773-3xqm

References