CVE-2026-23967
HIGH7.5EPSS 0.01%sm-crypto Affected by Signature Malleability in SM2-DSA
Published: 1/21/2026Modified: 2/3/2026
Description
### Summary A signature malleability vulnerability exists in the SM2 signature verification logic of the sm-crypto library. An attacker can derive a new valid signature for a previously signed message from an existing signature. ### Credit This vulnerability was discovered by: - XlabAI Team of Tencent Xuanwu Lab - Atuin Automated Vulnerability Discovery Engine
Affected packages (1)
- npm/sm-cryptofrom 0, < 0.3.14
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |