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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

CVSS 4.3 · Medium EPSS 0.23% · P14

Possible ATT&CK Techniques 1AI

T1005 · Data from Local System

Affected Version Matrix 1

VendorProductVersion RangeStatus
klamra22Klamra Paycal for Aspaclaria≤ 1.1.4affected
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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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: NVD (National Vulnerability Database)
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

VendorProductAffected VersionsCPESubscribe
klamra22Klamra 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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