Medium severity4.3NVD Advisory· Published Jun 6, 2026· Updated Jun 8, 2026
CVE-2026-8611
CVE-2026-8611
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2<=1.1.4+ 1 more
- (no CPE)range: <=1.1.4
- (no CPE)range: <=1.1.4
Patches
Vulnerability mechanics
References
8- plugins.trac.wordpress.org/browser/klamra-paycal-for-aspaclaria/tags/1.0.2/includes/Modules/Invoices/Legacy/includes/pdf/download.phpnvd
- plugins.trac.wordpress.org/browser/klamra-paycal-for-aspaclaria/tags/1.0.2/includes/Modules/Invoices/Legacy/includes/pdf/download.phpnvd
- plugins.trac.wordpress.org/browser/klamra-paycal-for-aspaclaria/tags/1.0.2/includes/Modules/Invoices/Legacy/includes/render.phpnvd
- plugins.trac.wordpress.org/browser/klamra-paycal-for-aspaclaria/tags/1.1.1/includes/Modules/Invoices/Legacy/includes/pdf/download.phpnvd
- plugins.trac.wordpress.org/browser/klamra-paycal-for-aspaclaria/tags/1.1.1/includes/Modules/Invoices/Legacy/includes/pdf/download.phpnvd
- plugins.trac.wordpress.org/browser/klamra-paycal-for-aspaclaria/tags/1.1.1/includes/Modules/Invoices/Legacy/includes/render.phpnvd
- plugins.trac.wordpress.org/changesetnvd
- www.wordfence.com/threat-intel/vulnerabilities/id/b07dc6ff-f88d-4c5a-8cd5-7c20f1755ecenvd
News mentions
1- Wordfence Intelligence Weekly WordPress Vulnerability Report (June 1, 2026 to June 7, 2026)Wordfence Blog · Jun 11, 2026