CVE-2025-6689: fl3r XSS (CVSS 6.4)

Description

The FL3R Accessibility Suite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's fl3raccessibilitysuite shortcode in all versions up to, and including, 1.4 due to insufficient input sanitization and output escaping on user supplied attributes. 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.

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CVSS v3.1 Score

6.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
fl3r	fl3r_accessibility_suite	< 1.4

References

Other References

https://wordpress.org/plugins/fl3r-accessibility-suite/#developers https://www.wordfence.com/threat-intel/vulnerabilities/id/33f673b5-2bcb-4591-b589-4d7230b5c2e7?source=cve

Frequently Asked Questions

What is CVE-2025-6689? +

The FL3R Accessibility Suite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's fl3raccessibilitysuite shortcode in all versions up to, and including, 1.4 due to insufficient input sanitization and output escaping on user supplied attributes. 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. It has a CVSS v3.1 base score of 6.4 (MEDIUM).

How severe is CVE-2025-6689? +

CVE-2025-6689 has a CVSS v3.1 score of 6.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-6689? +

CVE-2025-6689 affects products from fl3r, specifically: fl3r_accessibility_suite. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-6689? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2025-6689