What is CVE-2025-4963?

CVE-2025-4963 is a medium-severity vulnerability in Wpextended The Ultimate Wordpress Toolkit – Wp Extended, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2025-05-28.

How severe is CVE-2025-4963?

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

Is CVE-2025-4963 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Wpextended The Ultimate Wordpress Toolkit – Wp Extended

CVE-2025-4963

The WP Extended plugin for WordPress is vulnerable to Stored Cross-Site Scripting via SVG File uploads in all versions up to, and including, 3.0.15 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the SVG file.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (17.0th 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

Wpextended The Ultimate Wordpress Toolkit – Wp Extended — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

Frequently asked questions

What is CVE-2025-4963?: CVE-2025-4963 is a medium-severity vulnerability in Wpextended The Ultimate Wordpress Toolkit – Wp Extended, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2025-05-28.
How severe is CVE-2025-4963?: Medium severity. CVSS v3 base score is 6.4 out of 10.
Is CVE-2025-4963 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.