Stored Cross-Site Scripting Issue in LifterLMS eLearning Plugin for WordPress
CVE-2026-119098

6.4MEDIUM

What is CVE-2026-119098?

The LifterLMS plugin for WordPress is susceptible to a Stored Cross-Site Scripting (XSS) vulnerability through the 'answer[]' parameter. This issue arises from inadequate input sanitization and output escaping in versions up to 10.3.2. An attacker, with subscriber-level access or above, can insert malicious scripts into pages that execute when users visit the affected pages. Exploitation necessitates the attacker to be a student in a course with a quiz question, where the injected payload can run in the admin's browser during the grading process upon clicking 'Start a Review'.

Affected Version(s)

LifterLMS – WP LMS for eLearning, Online Courses, & Quizzes 0 <= 10.3.2

References

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

UKO
.