CVE-2021-39320 Scanner
CVE-2021-39320 scanner - Cross-Site Scripting (XSS) vulnerability in underConstruction plugin for WordPress
Used 2.8k times · 3.4k assets checked · url
CVE
CVE-2021-39320
6.1
CVSSmedium
Exploitable remotely over the internet · no authentication required · user interaction needed.
Description
The underConstruction plugin <= 1.18 for WordPress echoes out the raw value of `$GLOBALS['PHP_SELF']` in the ucOptions.php file. On certain configurations including Apache+modPHP, this makes it possible to use it to perform a reflected Cross-Site Scripting attack by injecting malicious code in the request path.
Attack Vector
Network
Privileges Req.
None
User Interaction
Required
underconstruction
Updated Oct 24, 2026View on NVD →
S4E scanner
CVE history: underconstruction
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