CVE-2026-8611 json
Klamra Paycal for Aspaclaria <= 1.1.4 - Insecure Direct Object Reference to Authenticated (Subscriber+) Sensitive Information Exposure via 'invoice_id' Parameter
published 2026-06-06 5 mo ago modified 2026-07-23 3 mo ago also EUVD-2026-34958
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 14%
- public exploits
- 0
- none known
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5 mo ago
Exploit prediction
0.23% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
Affected products
- klamra22 Klamra Paycal for Aspaclaria
Classification
- Weakness
-
- CWE-639 Authorization Bypass Through User-Controlled Key
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/b07dc6ff-f88d-4c5a-8cd5-7c20f1755ece?source=cve
- plugins.trac.wordpress.org /browser/klamra-paycal-for-aspaclaria/tags/1.1.1/includes/Modules/Invoices/Legacy/includes/pdf/download.php#L4
- plugins.trac.wordpress.org /browser/klamra-paycal-for-aspaclaria/tags/1.1.1/includes/Modules/Invoices/Legacy/includes/pdf/download.php#L7
- plugins.trac.wordpress.org /browser/klamra-paycal-for-aspaclaria/tags/1.1.1/includes/Modules/Invoices/Legacy/includes/render.php#L72
- plugins.trac.wordpress.org /browser/klamra-paycal-for-aspaclaria/tags/1.0.2/includes/Modules/Invoices/Legacy/includes/pdf/download.php#L4
- plugins.trac.wordpress.org /browser/klamra-paycal-for-aspaclaria/tags/1.0.2/includes/Modules/Invoices/Legacy/includes/pdf/download.php#L7
- plugins.trac.wordpress.org /browser/klamra-paycal-for-aspaclaria/tags/1.0.2/includes/Modules/Invoices/Legacy/includes/render.php#L72
- plugins.trac.wordpress.org /changeset?sfp_email=&sfph_mail=&reponame=&old=3555026%40klamra-paycal-for-aspaclaria&new=3555026%40klamra-pay
Sources
- CVE List CVE-2026-8611
- NVD CVE-2026-8611
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.