What is CVE-2025-11803?

CVE-2025-11803 is a medium-severity vulnerability in Wpfanyi Wpsite Shortcode, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2025-11-21.

How severe is CVE-2025-11803?

Medium severity. CVSS v3 base score is 6.4 out of 10.

XSS in Wpfanyi Wpsite Shortcode

CVE-2025-11803

The WPSite Shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'format' shortcode attribute in the wpsite_y shortcode and the 'before' attribute in the wpsite_postauthor shortcode in all versions up to, and including, 1.2. This is due to insufficient input sanitization and output escaping in error messages. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (14.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Wpfanyi Wpsite Shortcode — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2025-11803?: CVE-2025-11803 is a medium-severity vulnerability in Wpfanyi Wpsite Shortcode, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2025-11-21.
How severe is CVE-2025-11803?: Medium severity. CVSS v3 base score is 6.4 out of 10.