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CVE-2026-11988— LearnPress <= 4.3.9.1 - Insecure Direct Object Reference to Authenticated (Subscriber+) Sensitive Information Disclosure via 'userId' Parameter

Quick assessment

Affected
thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses
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.

thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses是thimpress公司的WordPress LMS插件。 ThimPress LearnPress 4.3.9.1及之前版本存在授权问题漏洞，该漏洞源于对‘userId’参数的用户控制键验证缺失，存在不安全的直接对象引用，可能导致经过身份验证的攻击者查看属于教师或管理员账户的课程注册进度和完成数据。

CVSS 6.5 · Medium EPSS 0.47% · P39

Possible ATT&CK Techniques 1 AI

T1135 · Network Share Discovery

Affected Version Matrix 1

VendorProduct Version RangeStatus
thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses ≤ 4.3.9.1 affected
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I. Basic Information for CVE-2026-11988

Vulnerability Information
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Vulnerability Title
LearnPress <= 4.3.9.1 - Insecure Direct Object Reference to Authenticated (Subscriber+) Sensitive Information Disclosure via 'userId' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The LearnPress – WordPress LMS Plugin for Create and Sell Online Courses plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 4.3.9.1 via the 'userId' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to view the course enrollment progress and completion data belonging to any instructor or administrator account on the site. This IDOR does not apply when the target user is a regular subscriber, as the guard correctly blocks cross-subscriber access; exploitation is limited to cases where the victim user holds the LP_TEACHER_ROLE or administrator role.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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
ThimPress LearnPress 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses是thimpress公司的WordPress LMS插件。 ThimPress LearnPress 4.3.9.1及之前版本存在授权问题漏洞，该漏洞源于对‘userId’参数的用户控制键验证缺失，存在不安全的直接对象引用，可能导致经过身份验证的攻击者查看属于教师或管理员账户的课程注册进度和完成数据。
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
thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses 0 ~ 4.3.9.1 -

II. Public POCs for CVE-2026-11988

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III. Intelligence Information for CVE-2026-11988

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Patches & Fixes for CVE-2026-11988 (2)

News Coverage for CVE-2026-11988 (1)

IV. Related Vulnerabilities

Same product: LearnPress – WordPress LMS Plugin for Create and Sell Online Courses
Same vendor: thimpress
Same weakness: CWE-639

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