CVE-2026-23967

HIGH

7.5

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/22/2026

Last Modified2/25/2026

Sourcenvd

Honeypot Sightings0

Affected Products

juneandgreen:sm-crypto

Weaknesses (CWE)

CWE-347

References

https://github.com/JuneAndGreen/sm-crypto/security/advisories/GHSA-qv7w-v773-3xqm(security-advisories@github.com)

IOC Correlations

No correlations recorded

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