{"id":"CVE-2025-24369","state":"PUBLISHED","title":"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.","publishedAt":"2025-01-27T22:57:26.728Z","updatedAt":"2025-01-28T15:18:44.746Z","severity":{"score":2.3,"label":"Low","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["Xe x"],"affected":[{"vendor":"Xe","product":"x","versions":[{"version":"< v1.11.0-37-gd98d70a","status":"affected"}]}],"references":["https://github.com/Xe/x/security/advisories/GHSA-56w8-8ppj-2p4f","https://github.com/Xe/x/commit/7bd7b209f4f1b897de85ec8973458dc8be606a8b","https://github.com/Xe/x/commit/e09d0226a628f04b1d80fd83bee777894a45cd02","https://xeiaso.net/notes/2025/GHSA-56w8-8ppj-2p4f"],"weaknesses":["CWE-807"],"ingestedAt":"2026-10-29T20:08:47.682Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/24xxx/CVE-2025-24369.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-24369","state":"PUBLISHED","datePublished":"2025-01-27T22:57:26.728Z","dateUpdated":"2025-01-28T15:18:44.746Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2025-01-20T15:18:26.991Z"},"containers":{"cna":{"title":"Anubis has a bot protection bypass when a sophisticated attacker asks to pass a challenge of difficulty 0","descriptions":[{"lang":"en","value":"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":[{"vendor":"Xe","product":"x","versions":[{"version":"< v1.11.0-37-gd98d70a","status":"affected"}]}],"references":[{"url":"https://github.com/Xe/x/security/advisories/GHSA-56w8-8ppj-2p4f","name":"https://github.com/Xe/x/security/advisories/GHSA-56w8-8ppj-2p4f","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/Xe/x/commit/7bd7b209f4f1b897de85ec8973458dc8be606a8b","name":"https://github.com/Xe/x/commit/7bd7b209f4f1b897de85ec8973458dc8be606a8b","tags":["x_refsource_MISC"]},{"url":"https://github.com/Xe/x/commit/e09d0226a628f04b1d80fd83bee777894a45cd02","name":"https://github.com/Xe/x/commit/e09d0226a628f04b1d80fd83bee777894a45cd02","tags":["x_refsource_MISC"]},{"url":"https://xeiaso.net/notes/2025/GHSA-56w8-8ppj-2p4f","name":"https://xeiaso.net/notes/2025/GHSA-56w8-8ppj-2p4f","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":2.3,"baseSeverity":"LOW","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-807","lang":"en","description":"CWE-807: Reliance on Untrusted Inputs in a Security Decision","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2025-01-27T22:57:26.728Z"},"source":{"advisory":"GHSA-56w8-8ppj-2p4f","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-01-28T14:59:28.984137Z","id":"CVE-2025-24369","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-01-28T15:18:44.746Z"}}]}}}