CVE-2026-52771 YesWiki: Second-Order SQL Injection in Page Delete API via Unescaped Page Tag (`ApiController::deletePage`)

YesWiki is a wiki system written in PHP. From version 4.2.0 to before version 4.6.6, ApiController::deletePage interpolates a page tag retrieved from the database into a DELETE FROM …links WHERE totag = '$tag' query without escaping. The page tag is attacker-controlled — the POST /api/pages/tag A...

PT-2026-6867

Summary A SQL Injection vulnerability exists in the ajax select.php endpoint when handling the componenti operation. An authenticated attacker can inject malicious SQL code through the optionsmatricola parameter. Proof of Concept Vulnerable Code File: modules/impianti/ajax/select.php:122-124 php...