Vulnerability Details CVE-2026-23967
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 1.1%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2026-23967
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cpe:2.3:a:juneandgreen:sm-crypto:-
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cpe:2.3:a:juneandgreen:sm-crypto:0.0.1
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cpe:2.3:a:juneandgreen:sm-crypto:0.0.2
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cpe:2.3:a:juneandgreen:sm-crypto:0.0.3
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cpe:2.3:a:juneandgreen:sm-crypto:0.0.4
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cpe:2.3:a:juneandgreen:sm-crypto:0.0.5
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cpe:2.3:a:juneandgreen:sm-crypto:0.0.6
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cpe:2.3:a:juneandgreen:sm-crypto:0.0.7
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cpe:2.3:a:juneandgreen:sm-crypto:0.0.8
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cpe:2.3:a:juneandgreen:sm-crypto:0.0.9
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cpe:2.3:a:juneandgreen:sm-crypto:0.1.0
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cpe:2.3:a:juneandgreen:sm-crypto:0.1.1
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cpe:2.3:a:juneandgreen:sm-crypto:0.1.2
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cpe:2.3:a:juneandgreen:sm-crypto:0.1.3
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cpe:2.3:a:juneandgreen:sm-crypto:0.1.4
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cpe:2.3:a:juneandgreen:sm-crypto:0.2.0
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cpe:2.3:a:juneandgreen:sm-crypto:0.2.1
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cpe:2.3:a:juneandgreen:sm-crypto:0.2.2
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cpe:2.3:a:juneandgreen:sm-crypto:0.2.3
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cpe:2.3:a:juneandgreen:sm-crypto:0.2.4
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cpe:2.3:a:juneandgreen:sm-crypto:0.2.5
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cpe:2.3:a:juneandgreen:sm-crypto:0.2.7
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cpe:2.3:a:juneandgreen:sm-crypto:0.3.0
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cpe:2.3:a:juneandgreen:sm-crypto:0.3.10
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cpe:2.3:a:juneandgreen:sm-crypto:0.3.11
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cpe:2.3:a:juneandgreen:sm-crypto:0.3.12
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cpe:2.3:a:juneandgreen:sm-crypto:0.3.13
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cpe:2.3:a:juneandgreen:sm-crypto:0.3.2
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cpe:2.3:a:juneandgreen:sm-crypto:0.3.3
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cpe:2.3:a:juneandgreen:sm-crypto:0.3.4
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cpe:2.3:a:juneandgreen:sm-crypto:0.3.5
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cpe:2.3:a:juneandgreen:sm-crypto:0.3.6
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cpe:2.3:a:juneandgreen:sm-crypto:0.3.7
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cpe:2.3:a:juneandgreen:sm-crypto:0.3.8
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cpe:2.3:a:juneandgreen:sm-crypto:0.3.9