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Cryptographic Semantic Binding Flaw

🗓️ 14 Jan 2026 08:01:48Reported by Veracode Vulnerability DatabaseType 
veracode
 veracode
🔗 sca.analysiscenter.veracode.com👁 3 Views

ALTCHA libraries have a binding flaw; ambiguous MAC between challenge and nonce enables tampering and reuse.

Related
Detection
Refs
Vulners
Node
altcha-libaltcha-libRange0.1.01.4.0js
OR
altchaaltchaRange1.1.01.2.0js
OR
altchaaltcha-org/altchaRangev0.1.00.1.0js
OR
altchaaltchaRange0.1.00.1.9js
OR

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29 Jan 2026 19:37Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.16.5
EPSS0.00069
SSVC
3