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CVE-2026-8611— Klamra Paycal for Aspaclaria <= 1.1.4 - Insecure Direct Object Reference to Authenticated (Subscriber+) Sensitive Information Exposure via 'invoice_id' Parameter

Quick assessment

Affected
klamra22 Klamra Paycal for Aspaclaria
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Klamra Paycal for Aspaclaria 1.1.4及之前版本存在安全漏洞，该漏洞源于invoice_id参数缺少对用户控制键的验证，可能导致经过身份验证的攻击者通过枚举顺序帖子ID下载任意客户发票，

CVSS 4.3 · Medium EPSS 0.39% · P30

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System

Affected Version Matrix 1

VendorProduct Version RangeStatus
klamra22 Klamra Paycal for Aspaclaria ≤ 1.1.4 affected
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I. Basic Information for CVE-2026-8611

Vulnerability Information
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Vulnerability Title
Klamra Paycal for Aspaclaria <= 1.1.4 - Insecure Direct Object Reference to Authenticated (Subscriber+) Sensitive Information Exposure via 'invoice_id' Parameter
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Klamra Paycal for Aspaclaria 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Klamra Paycal for Aspaclaria 1.1.4及之前版本存在安全漏洞，该漏洞源于invoice_id参数缺少对用户控制键的验证，可能导致经过身份验证的攻击者通过枚举顺序帖子ID下载任意客户发票，
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
klamra22 Klamra Paycal for Aspaclaria 0 ~ 1.1.4 -

II. Public POCs for CVE-2026-8611

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III. Intelligence Information for CVE-2026-8611

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Patches & Fixes for CVE-2026-8611 (3)

Security Blog Posts for CVE-2026-8611 (1)

Other References for CVE-2026-8611 (3)

IV. Related Vulnerabilities

Same weakness: CWE-639

V. Comments for CVE-2026-8611

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