CVE-2025-65849_CVE-2025-65849

{
    "lastseen": "",
    "description": "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 \u201cthe 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.\u201d",
    "published": "2025-12-08T00:00:00.000Z",
    "modified": "2025-12-11T14:36:52.373Z",
    "type": "cve",
    "title": "CVE-2025-65849",
    "source": "mitre",
    "references": "https://github.com/altcha-org/altcha/blob/154f874cbcdd4e639783463130d13988a2bd1bdc/src/helpers.ts#L170-L194\nhttps://altcha.org/docs/v2/obfuscation/\nhttps://github.com/eternal-flame-AD/altcha-deobfs",
    "id": "CVE-2025-65849",
    "bulletinFamily": "",
    "cwe": [
        "CWE-327"
    ],
    "cvelist": null,
    "sourceData": "n/a n/a n/a",
    "sourceHref": "",
    "cvss": {
        "score": 9.1,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Altcha",
    "version": "0.8.0 and later",
    "vendor": "Altcha",
    "ai_description": "Cryptanalytic break in Altcha Proof-of-Work obfuscation mode",
    "ai_severity": "Critical",
    "ai_vendor": "Altcha",
    "ai_product": "Altcha Proof-of-Work",
    "ai_version": "0.8.0 and later",
    "ai_score": 9.1
}