CVE-2026-13253

Affected software. Ultimate Post plugin for WordPress (up to version 5.0.31). Vulnerability. Stored Cross-Site Scripting via the 'moreResultsText' attribute of the ultimate-post/advanced-search block. Root cause. Advanced_Search::content() concatenates the attribute value into an HTML attribute a...

CVE-2026-13253

The Ultimate Post plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'moreResultsText' block attribute of the ultimate-post/advanced-search block in versions up to and including 5.0.31. This is due to insufficient input sanitization and output escaping in the...