{"dataType":"CVE_RECORD","cveMetadata":{"state":"PUBLISHED","cveId":"CVE-2025-65849","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","assignerShortName":"mitre","dateUpdated":"2025-12-11T14:36:52.373Z","dateReserved":"2025-11-18T00:00:00.000Z","datePublished":"2025-12-08T00:00:00.000Z"},"containers":{"cna":{"providerMetadata":{"orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre","dateUpdated":"2025-12-11T14:21:55.583Z"},"descriptions":[{"lang":"en","value":"A cryptanalytic break in Altcha Proof-of-Work obfuscation mode version 0.8.0 and later allows for remote visitors to recover the Proof-of-Work nonce in constant time via mathematical deduction. NOTE: this is disputed by the Supplier because the product's objective is \"to discourage automated scraping / bots, not guarantee resistance to determined attackers.\" The documentation states “the goal is not to provide a secure cryptographic algorithm but to use a proof-of-work mechanism that allows any capable device to decrypt the hidden data.”"}],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":[{"url":"https://github.com/altcha-org/altcha/blob/154f874cbcdd4e639783463130d13988a2bd1bdc/src/helpers.ts#L170-L194"},{"url":"https://altcha.org/docs/v2/obfuscation/"},{"url":"https://github.com/eternal-flame-AD/altcha-deobfs"}],"problemTypes":[{"descriptions":[{"type":"text","lang":"en","description":"n/a"}]}],"tags":["disputed"]},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-327","lang":"en","description":"CWE-327 Use of a Broken or Risky Cryptographic Algorithm"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.1,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-12-09T20:01:39.977561Z","id":"CVE-2025-65849","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-12-11T14:36:52.373Z"}}]},"dataVersion":"5.2"}