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CVE-2025-24369

Date: January 27, 2025

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.

Severity Score

Related Resources (6)

https://github.com/Xe/x/security/advisories/GHSA-56w8-8ppj-2p4f
https://nvd.nist.gov/vuln/detail/CVE-2025-24369
https://xeiaso.net/notes/2025/GHSA-56w8-8ppj-2p4f
https://github.com/Xe/x/commit/7bd7b209f4f1b897de85ec8973458dc8be606a8b
https://github.com/Xe/x/commit/e09d0226a628f04b1d80fd83bee777894a45cd02
https://www.mend.io/vulnerability-database/CVE-2025-24369

Severity Score

Weakness Type (CWE)

Reliance on Untrusted Inputs in a Security Decision

CWE-807

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

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