FKIE_CVE-2026-80099
Vulnerability from fkie_nvd - Published: 2026-09-09 09:17 - Updated: 2026-09-09 17:17
Severity
Summary
Several Newfold plugins are vulnerable to Authentication Bypass. The vulnerability exists because the plugins bundle the wp-module-data module. In the module, the `authenticate()` method — registered on the `rest_authentication_errors` filter and therefore evaluated for every unauthenticated REST API request — performs an HMAC-style Bearer token comparison that degenerates when `HiiveConnection::get_auth_token()` returns `false`: PHP coerces `strrev(false)` to `strrev('')`, collapsing the secret salt to the publicly known constant `hash('sha256', '') = e3b0c44...`, while all remaining hash inputs (HTTP method, request URL, raw request body, and the `X-Timestamp` header) remain fully attacker-controlled. This makes it possible for unauthenticated attackers to compute a valid Bearer token entirely offline, pass the token equality check, and have `wp_set_current_user()` invoked against the first administrator returned by `get_users(['role' => 'administrator'])`, granting full administrator-level access and enabling arbitrary REST API operations such as creating new administrator accounts and achieving complete site takeover. Vulnerable versions are WP Plugin Crazy Domains (<= 2.5.2), WP Plugin Web (<= 2.3.4), WP Plugin Hostgator (<= 3.1.0), WP Plugin Bluehost (<= 4.17.1). The affected module is vulnerable in versions up to, and including, 2.9.4.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "WP Plugin Web",
"vendor": "Newfold",
"versions": [
{
"lessThanOrEqual": "2.3.5",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "WP Plugin Crazy Domains",
"vendor": "Newfold",
"versions": [
{
"lessThanOrEqual": "2.5.2",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "WP Module Data",
"vendor": "Newfold",
"versions": [
{
"lessThanOrEqual": "2.9.7",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "WP Plugin Hostgator",
"vendor": "Newfold",
"versions": [
{
"lessThanOrEqual": "3.2.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "WP Plugin Bluehost",
"vendor": "Newfold",
"versions": [
{
"lessThanOrEqual": "4.19.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"source": "security@wordfence.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Several Newfold plugins are vulnerable to Authentication Bypass. The vulnerability exists because the plugins bundle the wp-module-data module. In the module, the `authenticate()` method \u2014 registered on the `rest_authentication_errors` filter and therefore evaluated for every unauthenticated REST API request \u2014 performs an HMAC-style Bearer token comparison that degenerates when `HiiveConnection::get_auth_token()` returns `false`: PHP coerces `strrev(false)` to `strrev(\u0027\u0027)`, collapsing the secret salt to the publicly known constant `hash(\u0027sha256\u0027, \u0027\u0027) = e3b0c44...`, while all remaining hash inputs (HTTP method, request URL, raw request body, and the `X-Timestamp` header) remain fully attacker-controlled. This makes it possible for unauthenticated attackers to compute a valid Bearer token entirely offline, pass the token equality check, and have `wp_set_current_user()` invoked against the first administrator returned by `get_users([\u0027role\u0027 =\u003e \u0027administrator\u0027])`, granting full administrator-level access and enabling arbitrary REST API operations such as creating new administrator accounts and achieving complete site takeover. Vulnerable versions are WP Plugin Crazy Domains (\u003c= 2.5.2), WP Plugin Web (\u003c= 2.3.4), WP Plugin Hostgator (\u003c= 3.1.0), WP Plugin Bluehost (\u003c= 4.17.1). The affected module is vulnerable in versions up to, and including, 2.9.4."
}
],
"id": "CVE-2026-80099",
"lastModified": "2026-09-09T17:17:45.587",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9,
"source": "security@wordfence.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-80099",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-09T15:41:26.162294Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-09-09T09:17:12.157",
"references": [
{
"source": "security@wordfence.com",
"url": "https://github.com/newfold-labs/wp-module-data/commit/9d913fd8fa12796c4d9c09081e4aeccfa5cb1301"
},
{
"source": "security@wordfence.com",
"url": "https://github.com/newfold-labs/wp-plugin-bluehost/compare/4.19.0...4.19.1"
},
{
"source": "security@wordfence.com",
"url": "https://github.com/newfold-labs/wp-plugin-crazy-domains/compare/2.5.2...2.5.3"
},
{
"source": "security@wordfence.com",
"url": "https://github.com/newfold-labs/wp-plugin-hostgator/compare/3.2.0...3.2.1"
},
{
"source": "security@wordfence.com",
"url": "https://github.com/newfold-labs/wp-plugin-web/compare/2.3.5...2.3.6"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/wp-module-data/trunk/includes/Data.php#L191"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/wp-module-data/trunk/includes/Data.php#L201"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/wp-module-data/trunk/includes/Data.php#L222"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/wp-module-data/trunk/includes/Data.php#L69"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/wp-module-data/trunk/includes/HiiveConnection.php#L406"
},
{
"source": "security@wordfence.com",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/3ee369c0-0d7c-4142-b3ba-a518288647ba?source=cve"
}
],
"sourceIdentifier": "security@wordfence.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-287"
}
],
"source": "security@wordfence.com",
"type": "Secondary"
}
]
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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