FKIE_CVE-2026-6072
Vulnerability from fkie_nvd - Published: 2026-05-20 02:16 - Updated: 2026-05-20 13:54
Severity
Summary
The Oliver POS – A WooCommerce Point of Sale (POS) plugin for WordPress is vulnerable to Authorization Bypass Through User-Controlled Key in all versions up to and including 2.4.2.6. The plugin protects its entire /wp-json/pos-bridge/* REST API namespace through the oliver_pos_rest_authentication() permission callback, which uses a loose PHP comparison (==) to compare the attacker-supplied 'OliverAuth' header value against the 'oliver_pos_authorization_token' option. On fresh installations where the admin has not yet completed the connection flow, this option is unset (get_option returns false). Due to PHP's type juggling, the loose comparison '0' == false evaluates to true, allowing an unauthenticated attacker to bypass authentication by sending 'OliverAuth: 0'. This grants full access to all POS API endpoints, enabling attackers to read user data (including administrator details), update user profiles (including email addresses), and delete non-admin users. An admin account email reset can lead to site takeover.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The Oliver POS \u2013 A WooCommerce Point of Sale (POS) plugin for WordPress is vulnerable to Authorization Bypass Through User-Controlled Key in all versions up to and including 2.4.2.6. The plugin protects its entire /wp-json/pos-bridge/* REST API namespace through the oliver_pos_rest_authentication() permission callback, which uses a loose PHP comparison (==) to compare the attacker-supplied \u0027OliverAuth\u0027 header value against the \u0027oliver_pos_authorization_token\u0027 option. On fresh installations where the admin has not yet completed the connection flow, this option is unset (get_option returns false). Due to PHP\u0027s type juggling, the loose comparison \u00270\u0027 == false evaluates to true, allowing an unauthenticated attacker to bypass authentication by sending \u0027OliverAuth: 0\u0027. This grants full access to all POS API endpoints, enabling attackers to read user data (including administrator details), update user profiles (including email addresses), and delete non-admin users. An admin account email reset can lead to site takeover."
}
],
"id": "CVE-2026-6072",
"lastModified": "2026-05-20T13:54:54.890",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 4.2,
"source": "security@wordfence.com",
"type": "Primary"
}
]
},
"published": "2026-05-20T02:16:37.207",
"references": [
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/oliver-pos/tags/2.4.2.6/includes/class-pos-bridge-user.php#L170"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/oliver-pos/tags/2.4.2.6/includes/class-pos-bridge-user.php#L195"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/oliver-pos/tags/2.4.2.6/includes/class-pos-bridge-user.php#L231"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/oliver-pos/tags/2.4.2.6/includes/class-pos-bridge.php#L1677"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/oliver-pos/tags/2.4.2.6/includes/class-pos-bridge.php#L1679"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/oliver-pos/trunk/includes/class-pos-bridge-user.php#L170"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/oliver-pos/trunk/includes/class-pos-bridge-user.php#L195"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/oliver-pos/trunk/includes/class-pos-bridge-user.php#L231"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/oliver-pos/trunk/includes/class-pos-bridge.php#L1677"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/oliver-pos/trunk/includes/class-pos-bridge.php#L1679"
},
{
"source": "security@wordfence.com",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/ca6aa922-9c58-445c-b88a-3d1d1c95102c?source=cve"
}
],
"sourceIdentifier": "security@wordfence.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-639"
}
],
"source": "security@wordfence.com",
"type": "Primary"
}
]
}
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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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