{"dataType": "CVE_RECORD", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2025-65849", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2025-12-08T18:48:09.253Z", "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": "2025-12-08T18:48:09.253Z"}, "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."}], "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"}]}]}}, "dataVersion": "5.2"}

{}

{"cveTags": [], "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."}], "id": "CVE-2025-65849", "lastModified": "2025-12-09T18:37:33.427", "metrics": {}, "published": "2025-12-08T19:15:50.817", "references": [{"source": "cve@mitre.org", "url": "https://altcha.org/docs/v2/obfuscation/"}, {"source": "cve@mitre.org", "url": "https://github.com/altcha-org/altcha/blob/154f874cbcdd4e639783463130d13988a2bd1bdc/src/helpers.ts#L170-L194"}, {"source": "cve@mitre.org", "url": "https://github.com/eternal-flame-AD/altcha-deobfs"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Awaiting Analysis"}

{}