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.
History

Fri, 23 Jan 2026 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Juneandgreen
Juneandgreen sm-crypto
Vendors & Products Juneandgreen
Juneandgreen sm-crypto

Thu, 22 Jan 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 22 Jan 2026 02:45:00 +0000

Type Values Removed Values Added
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.
Title sm-crypto Affected by Signature Malleability in SM2-DSA
Weaknesses CWE-347
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-01-22T01:59:30.555Z

Updated: 2026-01-22T16:03:58.987Z

Reserved: 2026-01-19T14:49:06.314Z

Link: CVE-2026-23967

cve-icon Vulnrichment

Updated: 2026-01-22T16:03:46.053Z

cve-icon NVD

Status : Received

Published: 2026-01-22T03:15:47.167

Modified: 2026-01-22T03:15:47.167

Link: CVE-2026-23967

cve-icon Redhat

No data.