CVE-2025-24369 (GCVE-0-2025-24369)
Vulnerability from cvelistv5 – Published: 2025-01-27 22:57 – Updated: 2025-01-28 15:18
VLAI
EPSS
VEX
Title
Anubis has a bot protection bypass when a sophisticated attacker asks to pass a challenge of difficulty 0
Summary
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
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-28 14:59 UTC
CWE
- CWE-807 - Reliance on Untrusted Inputs in a Security Decision
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/Xe/x/security/advisories/GHSA-… | x_refsource_CONFIRM |
| https://github.com/Xe/x/commit/7bd7b209f4f1b897de… | x_refsource_MISC |
| https://github.com/Xe/x/commit/e09d0226a628f04b1d… | x_refsource_MISC |
| https://xeiaso.net/notes/2025/GHSA-56w8-8ppj-2p4f | x_refsource_MISC |
Impacted products
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"id": "CVE-2025-24369",
"lastModified": "2026-06-17T08:58:55.043",
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"exploitMaturity": "NOT_DEFINED",
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"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
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"subConfidentialityImpact": "NONE",
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"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
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