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vuln-cve/data/2026/100xxx/CVE-2026-100667.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-100667",
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"state": "PUBLISHED",
"assignerShortName": "VulnCheck",
"dateReserved": "2026-09-26T02:34:55.635Z",
"datePublished": "2026-09-26T13:23:32.685Z",
"dateUpdated": "2026-09-28T18:14:51.902Z"
},
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"shortName": "VulnCheck",
"dateUpdated": "2026-09-26T13:23:32.685Z"
},
"datePublic": "2026-09-09T00:00:00.000Z",
"title": "grav-plugin-login 3.8.7 through 3.9.6 Two-Factor Authentication Bypass",
"descriptions": [
{
"lang": "en",
"value": "grav-plugin-login (the Grav CMS Login plugin) versions >= 3.8.7 and < 3.9.7 allow the two-factor authentication challenge to be bypassed for content gated by the authenticated() Twig function or the [authenticated] shortcode. On sites with 2FA enabled, Login::isAuthenticated() checked only the session flag indicating that the password step had succeeded, not the flag indicating that login had completed, so a session sitting at the 2FA code prompt was treated as fully authenticated. An attacker who knows a member's password but cannot answer that member's second factor can therefore read member-only content rendered by the no-argument authenticated() or group authenticated(null, 'group') forms and by [authenticated]; the inverse [guest] shortcode is likewise evaluated too early. Impact is limited to disclosure of that content: the attacker does not obtain a completed session, cannot access pages protected by an access: rule, and cannot act as the user. The authenticated('some.permission') form, which goes through UserObject::authorize(), is not affected. Fixed in grav-plugin-login 3.9.7."
}
],
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"description": "Missing Critical Step in Authentication",
"cweId": "CWE-304",
"type": "CWE"
}
]
}
],
"affected": [
{
"vendor": "getgrav",
"product": "grav",
"defaultStatus": "unaffected",
"versions": [
{
"version": "3.8.7",
"status": "affected",
"versionType": "semver",
"lessThan": "3.9.7"
},
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"version": "3.9.7",
"status": "unaffected",
"versionType": "semver"
}
]
}
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"vulnerable": true,
"criteria": "cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.8.7",
"versionEndExcluding": "3.9.7"
}
]
}
]
}
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"baseScore": 6.9,
"baseSeverity": "MEDIUM"
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"userInteraction": "NONE",
"scope": "UNCHANGED",
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"integrityImpact": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.3,
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}
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],
"references": [
{
"url": "https://github.com/getgrav/grav/security/advisories/GHSA-636m-8598-45r9",
"tags": [
"vendor-advisory"
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"name": "GitHub Security Advisory (GHSA-636m-8598-45r9)"
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{
"name": "VulnCheck Advisory: grav-plugin-login 3.8.7 through 3.9.6 Two-Factor Authentication Bypass",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/grav-plugin-login-3.8.7-through-3.9.6-two-factor-authentication-bypass"
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"content": {
"timestamp": "2026-09-28T18:12:38.035267Z",
"id": "CVE-2026-100667",
"options": [
{
"Exploitation": "none"
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{
"Automatable": "yes"
},
{
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],
"role": "CISA Coordinator",
"version": "2.0.3"
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"title": "CISA ADP Vulnrichment",
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