요약
- CVE-2026-23967은(는) sm-crypto (juneandgreen), sm-crypto에 영향을 주는 높음 (CVSS 7.5) 취약점입니다.
- 향후 30일 내 악용 확률(EPSS): 0.21%, 전체 취약점의 11.3%보다 높음.
- 조치: 0.3.14 이상으로 업데이트하세요.
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
NVD 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.
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