CVE-2026-8611: CWE-639 Authorization Bypass Through User-Controlled Key in klamra22 Klamra Paycal for Aspaclaria
Klamra Paycal for Aspaclaria WordPress plugin versions up to and including 1.1.4 contain an insecure direct object reference vulnerability via the 'invoice_id' parameter. This flaw allows authenticated users with subscriber-level access or higher to enumerate invoice IDs and download invoices belonging to other customers. The exposed invoices contain sensitive personally identifiable information such as full name, email, phone number, order total, line items, and customer notes.
AI Analysis
Technical Summary
CVE-2026-8611 is an authorization bypass vulnerability (CWE-639) in the Klamra Paycal for Aspaclaria WordPress plugin affecting all versions up to 1.1.4. The vulnerability arises from missing validation of the user-controlled 'invoice_id' parameter, enabling authenticated attackers with subscriber-level privileges or above to access arbitrary customer invoices by enumerating sequential post IDs. This leads to unauthorized disclosure of sensitive billing PII.
Potential Impact
An attacker with subscriber-level access can access and download invoices of other customers, exposing sensitive personal and billing information including full names, email addresses, phone numbers, order totals, line items, and customer notes. There is no indication of integrity or availability impact. The confidentiality breach could lead to privacy violations and potential misuse of exposed data.
Mitigation Recommendations
No official patch or remediation is currently available for this vulnerability. Users should monitor the vendor's advisory for updates. Until a fix is released, restrict subscriber-level access where possible and consider disabling or limiting use of the affected plugin to reduce exposure.
CVE-2026-8611: CWE-639 Authorization Bypass Through User-Controlled Key in klamra22 Klamra Paycal for Aspaclaria
Description
Klamra Paycal for Aspaclaria WordPress plugin versions up to and including 1.1.4 contain an insecure direct object reference vulnerability via the 'invoice_id' parameter. This flaw allows authenticated users with subscriber-level access or higher to enumerate invoice IDs and download invoices belonging to other customers. The exposed invoices contain sensitive personally identifiable information such as full name, email, phone number, order total, line items, and customer notes.
CVSS v3.1
Score 4.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-8611 is an authorization bypass vulnerability (CWE-639) in the Klamra Paycal for Aspaclaria WordPress plugin affecting all versions up to 1.1.4. The vulnerability arises from missing validation of the user-controlled 'invoice_id' parameter, enabling authenticated attackers with subscriber-level privileges or above to access arbitrary customer invoices by enumerating sequential post IDs. This leads to unauthorized disclosure of sensitive billing PII.
Potential Impact
An attacker with subscriber-level access can access and download invoices of other customers, exposing sensitive personal and billing information including full names, email addresses, phone numbers, order totals, line items, and customer notes. There is no indication of integrity or availability impact. The confidentiality breach could lead to privacy violations and potential misuse of exposed data.
Mitigation Recommendations
No official patch or remediation is currently available for this vulnerability. Users should monitor the vendor's advisory for updates. Until a fix is released, restrict subscriber-level access where possible and consider disabling or limiting use of the affected plugin to reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-05-14T16:04:08.456Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a23a6aae29bf47b5015340b
Added to database: 06/06/2026, 04:48:42 UTC
Last enriched: 06/13/2026, 09:59:22 UTC
Last updated: 07/31/2026, 19:23:00 UTC
Views: 81
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