high7.5
CVE-2026-23967
sm-crypto Affected by Signature Malleability in SM2-DSA
Impact
### 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
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | sm-crypto | < 0.3.14 | 0.3.14 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Juneandgreen | Sm-Crypto | before 0.3.14 |