Stored Cross-Site Scripting in ACF Onyx Poll Plugin by WordPress

CVE-2025-5841

What is CVE-2025-5841?

The ACF Onyx Poll plugin for WordPress is susceptible to Stored Cross-Site Scripting due to inadequate input sanitization and output escaping, specifically via the 'class' parameter. Authenticated attackers with Contributor-level access and higher can exploit this vulnerability to inject malicious web scripts into pages, which will execute when users access these compromised pages. Proper mitigation protocols are essential to prevent this injection risk.

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