CVE-2026-23967highCWE-347

CVE-2026-23967: high-severity vulnerability in JuneAndGreen sm-crypto

sm-crypto Affected by Signature Malleability in SM2-DSA

Published

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.5epss 0.2%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Affected products
JuneAndGreen · sm-crypto
Related CVEs — JuneAndGreen sm-crypto

In the same product, most dangerous first.

CVE-2026-73567CRITICALsm-crypto: Predictable SM2 key generation in Node.js: default RNG uses Math.random + wall clockEPSS 0.4%CVE-2026-23966CRITICALsm-crypto Affected by Private Key Recovery in SM2-PKEEPSS 0.2%CVE-2026-23965HIGHsm-crypto Affected by Signature Forgery in SM2-DSAEPSS 0.2%