FKIE_CVE-2026-8611
Vulnerability from fkie_nvd - Published: 2026-06-06 05:16 - Updated: 2026-07-23 07:10
Severity
Summary
The Klamra Paycal for Aspaclaria plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.1.4 via the 'invoice_id' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to download arbitrary customer invoices by enumerating sequential post IDs, exposing sensitive billing PII including full name, email address, phone number, order total, line items, and customer notes belonging to other customers.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Klamra Paycal for Aspaclaria",
"vendor": "klamra22",
"versions": [
{
"lessThanOrEqual": "1.1.4",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"source": "security@wordfence.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The Klamra Paycal for Aspaclaria plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.1.4 via the \u0027invoice_id\u0027 parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to download arbitrary customer invoices by enumerating sequential post IDs, exposing sensitive billing PII including full name, email address, phone number, order total, line items, and customer notes belonging to other customers."
},
{
"lang": "es",
"value": "El plugin Klamra Paycal para Aspaclaria para WordPress es vulnerable a Referencia Directa Insegura a Objeto en todas las versiones hasta la 1.1.4, inclusive, a trav\u00e9s del par\u00e1metro \u0027invoice_id\u0027 debido a la falta de validaci\u00f3n en una clave controlada por el usuario. Esto hace posible que atacantes autenticados, con acceso de nivel de suscriptor y superior, descarguen facturas de clientes arbitrarias al enumerar IDs de publicaciones secuenciales, exponiendo PII de facturaci\u00f3n sensible, incluyendo nombre completo, direcci\u00f3n de correo electr\u00f3nico, n\u00famero de tel\u00e9fono, total del pedido, art\u00edculos de l\u00ednea y notas del cliente pertenecientes a otros clientes."
}
],
"id": "CVE-2026-8611",
"lastModified": "2026-07-23T07:10:00.113",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 1.4,
"source": "security@wordfence.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-8611",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-06T11:33:58.894533Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-06-06T05:16:29.383",
"references": [
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/klamra-paycal-for-aspaclaria/tags/1.0.2/includes/Modules/Invoices/Legacy/includes/pdf/download.php#L4"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/klamra-paycal-for-aspaclaria/tags/1.0.2/includes/Modules/Invoices/Legacy/includes/pdf/download.php#L7"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/klamra-paycal-for-aspaclaria/tags/1.0.2/includes/Modules/Invoices/Legacy/includes/render.php#L72"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/klamra-paycal-for-aspaclaria/tags/1.1.1/includes/Modules/Invoices/Legacy/includes/pdf/download.php#L4"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/klamra-paycal-for-aspaclaria/tags/1.1.1/includes/Modules/Invoices/Legacy/includes/pdf/download.php#L7"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/klamra-paycal-for-aspaclaria/tags/1.1.1/includes/Modules/Invoices/Legacy/includes/render.php#L72"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=3555026%40klamra-paycal-for-aspaclaria\u0026new=3555026%40klamra-paycal-for-aspaclaria\u0026sfp_email=\u0026sfph_mail="
},
{
"source": "security@wordfence.com",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b07dc6ff-f88d-4c5a-8cd5-7c20f1755ece?source=cve"
}
],
"sourceIdentifier": "security@wordfence.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-639"
}
],
"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.
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