CVE-2026-8611 Information disclosure in Klamra Paycal for Aspaclaria
Authenticated subscribers can access other customers' sensitive billing information by manipulating the invoice_id parameter in the Klamra Paycal plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-8611?
CVE-2026-8611 is a medium-severity vulnerability in klamra22 Klamra Paycal for Aspaclaria, published on 6 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-639
Which versions are affected by CVE-2026-8611?
How do I fix CVE-2026-8611?
No fix has been published for CVE-2026-8611 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-8611 being exploited?
There is no known exploitation of CVE-2026-8611 in the wild and no public exploit code.
Sources
Also known as GHSA-rwm7-xhj3-2xjv.