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ALTCHA Proof-of-Work Vulnerable to Challenge Splicing and Replay

🗓️ 16 Dec 2025 00:43:52Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 4 Views

ALTCHA PoW flaw enables challenge splicing and replay due to binding issue; upgrade patched version.

Related
Detection
Refs
Vulners
Node
altchaRange<1.0.0erlang
OR
altchaRange<1.0.0pip
OR
altchaRange<1.0.0rubygems
OR
org.altchaaltchaRange<1.3.0maven
OROR
altcha-orgaltchaRange<1.3.1composer
OR
altcha-libRange<1.4.1npm

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20 Dec 2025 02:32Current
6.7Medium risk
Vulners AI Score6.7
CVSS 3.16.5
EPSS0.00069
SSVC
4