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vuln-cve/data/2025/65xxx/CVE-2025-65849.json
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{
"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"
}