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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👁 16 Views

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

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Detection
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Vulners
Node
OR
altchaRange<1.0.0erlang
altchaRange<1.0.0pip
altchaRange<1.0.0rubygems
org.altchaaltchaRange<1.3.0maven
altcha-orgaltchaRange<1.3.1composer
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
EPSS0.00463
SSVC
16