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vuln-cve/data/2026/85xxx/CVE-2026-85590.json
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"cveId": "CVE-2026-85590",
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"state": "PUBLISHED",
"assignerShortName": "VulnCheck",
"dateReserved": "2026-09-04T10:59:00.162Z",
"datePublished": "2026-09-04T11:29:56.063Z",
"dateUpdated": "2026-09-04T14:01:35.450Z"
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"datePublic": "2026-08-20T00:00:00.000Z",
"title": "phpMyFAQ before 4.1.8 Authentication Bypass via Two-Factor Disable",
"descriptions": [
{
"lang": "en",
"value": "phpMyFAQ before 4.1.8 contains an authentication bypass vulnerability in its two-factor authentication (TOTP) disable functionality. The removeTwofactorConfig() handler (reachable via POST /api/user/remove-twofactor) verifies only that the user is logged in and that a valid CSRF token is supplied, then disables TOTP without requiring password re-entry or a current TOTP code. The same downgrade is also reachable inline via PUT /api/user/data/update, which accepts a plain twofactor_enabled form field under the same session+CSRF-only guard. An attacker who has hijacked a user's session can silently strip two-factor protection from any account, including administrator accounts, after which password-only authentication succeeds."
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"description": "Use of Single-factor Authentication",
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"product": "phpMyFAQ",
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"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
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"vulnIntegrityImpact": "HIGH",
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