CVE-2026-0557: WP Data Access <= 5.5.63 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'wpda_app' Shortcode
The WP Data Access plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'wpdaapp' shortcode in all versions up to, and including, 5.5.63 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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-0557?
CVE-2026-0557 is considered a medium severity vulnerability due to its ability to allow stored XSS attacks in affected systems.
How do I fix CVE-2026-0557?
To fix CVE-2026-0557, update the WP Data Access plugin to version 5.5.64 or later.
Who is affected by CVE-2026-0557?
CVE-2026-0557 affects all versions of the WP Data Access plugin for WordPress up to and including 5.5.63.
What type of vulnerability is CVE-2026-0557?
CVE-2026-0557 is a Stored Cross-Site Scripting (XSS) vulnerability.
What should I do if I cannot update to the fixed version for CVE-2026-0557?
If unable to update, consider disabling the WP Data Access plugin until the vulnerability can be patched.