Description
A cryptanalytic break in Altcha Proof-of-Work obfuscation mode version 0.8.0 and later allows for remote visitors to recover the Proof-of-Work nonce in constant time via mathematical deduction.
Recommendation
No fix is available yet. Followings are affected versions:
- >= 0.8.0, <= 2.2.4
References
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See something that needs correcting? Let us knowUpdated December 12, 2025