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.

PUBLISHED Reserved 2026-05-14 | Published 2026-06-06 | Updated 2026-06-06 | Assigner Wordfence

Problem types

CWE-639 Authorization Bypass Through User-Controlled Key

Product status

Timeline

Credits

KEVIN LEE finder

References

www.wordfence.com/...-f88d-4c5a-8cd5-7c20f1755ece?source=cve

plugins.trac.wordpress.org/...gacy/includes/pdf/download.php

plugins.trac.wordpress.org/...gacy/includes/pdf/download.php

plugins.trac.wordpress.org/...ces/Legacy/includes/render.php

plugins.trac.wordpress.org/...gacy/includes/pdf/download.php

plugins.trac.wordpress.org/...gacy/includes/pdf/download.php

plugins.trac.wordpress.org/...ces/Legacy/includes/render.php

plugins.trac.wordpress.org/...paclaria&sfp_email=&sfph_mail=

cve.org (CVE-2026-8611)

nvd.nist.gov (CVE-2026-8611)

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