Login with OTP <= 1.6 - Unauthenticated Authentication Bypass via OTP Brute Force_CVE-2026-8760

{
    "lastseen": "",
    "description": "The Login with OTP plugin for WordPress is vulnerable to authentication bypass in all versions up to, and including, 1.6. This is due to an incomplete fix for CVE-2024-11178: the rate-limit/lockout check added to `otpl_login_action()` was placed only inside the OTP-generation branch and is never evaluated on the OTP-validation branch, and the generated 6-digit OTP additionally has no expiration. This makes it possible for unauthenticated attackers to brute-force the 900,000-value OTP space for any user account (including administrators) and obtain a valid `wp_set_auth_cookie()` session, leading to full site compromise.",
    "published": "2026-05-27T05:31:29.863Z",
    "modified": "2026-05-27T05:31:29.863Z",
    "type": "cve",
    "title": "Login with OTP <= 1.6 - Unauthenticated Authentication Bypass via OTP Brute Force",
    "source": "Wordfence",
    "references": "https://www.wordfence.com/threat-intel/vulnerabilities/id/ad22cb24-e6a0-456f-afe8-88a39acd97d3?source=cve\nhttps://plugins.trac.wordpress.org/browser/otp-login/tags/1.6/lib/otpl-class.php#L419\nhttps://plugins.trac.wordpress.org/browser/otp-login/trunk/lib/otpl-class.php#L419\nhttps://plugins.trac.wordpress.org/browser/otp-login/tags/1.6/lib/otpl-class.php#L424\nhttps://plugins.trac.wordpress.org/browser/otp-login/trunk/lib/otpl-class.php#L424\nhttps://plugins.trac.wordpress.org/browser/otp-login/tags/1.6/lib/otpl-class.php#L427\nhttps://plugins.trac.wordpress.org/browser/otp-login/trunk/lib/otpl-class.php#L427\nhttps://plugins.trac.wordpress.org/browser/otp-login/tags/1.6/lib/otpl-class.php#L361\nhttps://plugins.trac.wordpress.org/browser/otp-login/trunk/lib/otpl-class.php#L361\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-11178",
    "id": "CVE-2026-8760",
    "bulletinFamily": "",
    "cwe": [
        "CWE-307"
    ],
    "cvelist": null,
    "sourceData": "india-web-developer Login with OTP <= 1.6",
    "sourceHref": "",
    "cvss": {
        "score": 9.8,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
        "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": "Login with OTP",
    "version": "<= 1.6",
    "vendor": "india-web-developer",
    "ai_description": "Unauthenticated authentication bypass via OTP brute force in Login with OTP plugin for WordPress",
    "ai_severity": "Critical",
    "ai_vendor": "india-web-developer",
    "ai_product": "Login with OTP",
    "ai_version": "<= 1.6",
    "ai_score": 9.8
}