CVE-2026-23967 (GCVE-0-2026-23967)

Vulnerability from cvelistv5 – Published: 2026-01-22 01:59 – Updated: 2026-01-22 16:03
VLAI
Title
sm-crypto Affected by Signature Malleability in SM2-DSA
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-22 16:03 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
JuneAndGreen sm-crypto Affected: < 0.3.14
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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