PT-2026-1721 · WordPress · Lesson Plan Book

Abdulsamad Yusuf · Published 2026-01-09 · Updated 2026-01-09 · CVE-2025-13893

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Lesson Plan Book versions prior to 1.4

Description The Lesson Plan Book plugin for WordPress is susceptible to Reflected Cross-Site Scripting due to inadequate input sanitization and output escaping. This allows unauthenticated attackers to inject arbitrary web scripts into pages that will execute if a user is tricked into performing an action, such as clicking a link. The vulnerability is related to the $ SERVER['PHP SELF'] variable.

Recommendations Update Lesson Plan Book to version 1.4 or later.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-13893

Affected Products

Lesson Plan Book

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2025-13893 · Security Note
• https://twitter.com/CVEnew/status/2009589662940078312 · Twitter Post
• https://plugins.trac.wordpress.org/browser/lesson-plan-book/trunk/lesson.php#L719 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/18696937-5cc5-4e14-940d-fc25468377a3?source=cve · Note
• https://plugins.trac.wordpress.org/browser/lesson-plan-book/trunk/lesson.php#L1776 · Note
• https://t.me/CVEtracker/41831 · Telegram Post
• https://plugins.trac.wordpress.org/browser/lesson-plan-book/trunk/lesson.php#L1910 · Note