Improper Verification of Cryptographic Signature Affecting sm-crypto package, versions <0.3.14
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-SMCRYPTO-15060560
- published22 Jan 2026
- disclosed21 Jan 2026
- creditXlabAI
Introduced: 21 Jan 2026
NewCVE-2026-23967 (opens in a new tab)How to fix?
Upgrade sm-crypto to version 0.3.14 or higher.
Overview
sm-crypto is a sm-crypto
Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature via the SM2 signature verification process. An attacker can create a new valid signature for a previously signed message by manipulating an existing signature.