FKIE_CVE-2026-12093
Vulnerability from fkie_nvd - Published: 2026-06-18 06:16 - Updated: 2026-06-18 15:23
Severity
Summary
The Simple Membership plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.7.5. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to deactivate arbitrary member accounts by forging a charge.refunded webhook event containing a victim's subscription ID, setting the target member's account_state to 'inactive' and triggering cancellation hooks, transaction-record status changes, and cancellation notification emails. This vulnerability is exploitable only on installations where no Stripe webhook signing secret has been configured, which is the default out-of-the-box state; sites that have configured the stripe-webhook-signing-secret option are routed to the properly verified HMAC path and are not affected.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Simple Membership",
"vendor": "wpinsider-1",
"versions": [
{
"lessThanOrEqual": "4.7.5",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"source": "security@wordfence.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The Simple Membership plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.7.5. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to deactivate arbitrary member accounts by forging a charge.refunded webhook event containing a victim\u0027s subscription ID, setting the target member\u0027s account_state to \u0027inactive\u0027 and triggering cancellation hooks, transaction-record status changes, and cancellation notification emails. This vulnerability is exploitable only on installations where no Stripe webhook signing secret has been configured, which is the default out-of-the-box state; sites that have configured the stripe-webhook-signing-secret option are routed to the properly verified HMAC path and are not affected."
}
],
"id": "CVE-2026-12093",
"lastModified": "2026-06-18T15:23:56.087",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 1.4,
"source": "security@wordfence.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-12093",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-18T13:21:36.202720Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-06-18T06:16:57.560",
"references": [
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.7.3/classes/class.swpm-wp-loaded-tasks.php#L96"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.7.3/ipn/swpm-stripe-webhook-handler.php#L297"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.7.3/ipn/swpm-stripe-webhook-handler.php#L71"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.7.3/ipn/swpm_handle_subsc_ipn.php#L381"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.7.4/classes/class.swpm-wp-loaded-tasks.php#L96"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.7.4/ipn/swpm-stripe-webhook-handler.php#L297"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.7.4/ipn/swpm-stripe-webhook-handler.php#L71"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.7.4/ipn/swpm_handle_subsc_ipn.php#L381"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=3573852%40simple-membership\u0026new=3573852%40simple-membership\u0026sfp_email=\u0026sfph_mail="
},
{
"source": "security@wordfence.com",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/2f91a7c3-ee0e-48e9-aa5f-dfc1160bbc09?source=cve"
}
],
"sourceIdentifier": "security@wordfence.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-862"
}
],
"source": "security@wordfence.com",
"type": "Secondary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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