What is CVE-2025-13861?

CVE-2025-13861 is a medium-severity vulnerability in Linksoftware HTML Forms – Simple WordPress Plugin, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-12-17.

How severe is CVE-2025-13861?

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

XSS in Linksoftware HTML Forms – Simple WordPress Plugin

CVE-2025-13861

The HTML Forms – Simple WordPress Forms Plugin for WordPress is vulnerable to Unauthenticated Stored Cross-Site Scripting in all versions up to and including 1.6.0 due to insufficient sanitization of fabricated file upload field metadata before displaying it in the WordPress admin dashboard. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute whenever an administrator accesses the form submissions page.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (12.5th 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

Linksoftware Html Forms – Simple Wordpress Plugin — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2025-13861?: CVE-2025-13861 is a medium-severity vulnerability in Linksoftware HTML Forms – Simple WordPress Plugin, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-12-17.
How severe is CVE-2025-13861?: Medium severity. CVSS v3 base score is 6.1 out of 10.