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CVE PROGRAM SOURCE RECORD2.3 Low

CVE-2025-24369

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

Description

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 (such as 42069), and then passes the challenge with difficulty zero. Commit e09d0226a628f04b1d80fd83bee777894a45cd02 fixes this behavior by not using a client-specified difficulty value.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Xe x

  • < v1.11.0-37-gd98d70aaffected

References