sm-crypto Affected by Signature Malleability in SM2-DSA_CVE-2026-23967

7.5 / 10

HIGH

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

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.

Basic Information

ID CVE-2026-23967

Source GitHub_M

Published Jan 22, 2026 at 01:59

Modified Jan 22, 2026 at 16:03

Affected Product

Vendor JuneAndGreen

Product sm-crypto

Version < 0.3.14

Affected Versions JuneAndGreen sm-crypto < 0.3.14

CWE Classification

CWE-347

References

github.com /JuneAndGreen/sm-crypto/security/advisories/GHSA-qv7w-v773-3xqm

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    "published": "2026-01-22T01:59:30.555Z",
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