Bot Protection Bypass

Anubis is vulnerable to Bot Protection Bypass. The vulnerability is due to insufficient validation due to allowing attackers to specify a nonce and set the challenge difficulty to zero, effectively bypassing the bot protection mechanism...

CVE-2025-24369 Anubis has a bot protection bypass when a sophisticated attacker asks to pass a challenge of difficulty 0

Anubis is a tool that allows administrators to protect bots against AI scrapers through bot-checking heuristics and a proof-of-work challenge to discourage scraping from multiple IP addresses. Anubis allows attackers to bypass the bot protection by requesting a challenge, formulates any nonce suc...