What is CVE-2025-13893?

CVE-2025-13893 is a medium-severity vulnerability in Burtrw Lesson Plan Book, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-01-09.

How severe is CVE-2025-13893?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Burtrw Lesson Plan Book

CVE-2025-13893

The Lesson Plan Book plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the `$_SERVER['PHP_SELF']` variable in all versions up to, and including, 1.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (12.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Burtrw Lesson Plan Book — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2025-13893?: CVE-2025-13893 is a medium-severity vulnerability in Burtrw Lesson Plan Book, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-01-09.
How severe is CVE-2025-13893?: Medium severity. CVSS v3 base score is 6.1 out of 10.