CVE-2026-11988

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

2026-06-30 16:07
javitoia

Strategic Overview

Status
Patched in 4.4.0
Affected Plugin
LearnPress – WordPress LMS Plugin for Create and Sell Online Courses
Affected Version
<= 4.3.9.1
CVSS
6.5Medium
Weakness type
CWE-639 · Authorization Bypass Through User-Controlled Key
CVE
CVE-2026-11988
View all LearnPress – WordPress LMS Plugin for Create and Sell Online Courses vulnerabilities

At a glance

CVE-2026-11988 is a medium-severity Authorization Bypass Through User-Controlled Key vulnerability in the LearnPress WordPress plugin, affecting versions <= 4.3.9.1. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high confidentiality impact). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 4.4.0; sites on affected versions should update now. Disclosed June 2026, reported by javitoia.

Vulnerability Overview

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.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on confidentiality.

CWE-639: Authorization Bypass Through User-Controlled Key

LearnPress <= 4.3.9.1 carries this weakness at userId, and reaching it takes an account at Subscriber level or above. Authorization bypass through a user-controlled key, often called insecure direct object reference, means the application looks up a record by an identifier from the request without checking that the caller owns it.

Changing a number in the request is enough to read or modify other users' records, which on commerce and membership sites means customer data. For LearnPress the fix is 4.4.0: builds <= 4.3.9.1 are affected, anything from 4.4.0 onward is not.

Remediation

Update to version 4.4.0, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: LearnPress 4.4.0 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-11988https://www.wordfence.com/threat-intel/vulnerabilities/id/6b5e8cfd-989e-4a64-abb0-9daa22df46a4https://nvd.nist.gov/vuln/detail/CVE-2026-11988

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C