CVE-2021-39320 MEDIUM

CVE-2021-39320: underConstruction <= 1.18 - Reflected Cross-Site Scripting

Vendor Noah Kagan
Product underConstruction
Weakness CWE-79 · XSS
Published September 1, 2021
Last update May 5, 2025
View on NVD All CVEs

CVSS base score

6.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

September 1, 2021 CVE published
May 5, 2025 Record updated

Related vulnerabilities

04Related CVE

CVE-2023-47265 Apache Airflow: DAG Params alllow to embed unchecked Javascript CVE-2023-48555 Adobe Experience Manager | Cross-site Scripting (Stored XSS) (CWE-79) CVE-2025-69056 WordPress Hotel Listing plugin <= 1.4.0 - Reflected Cross Site Scripting (XSS) vulnerability CVE-2026-25346 WordPress FAQ Builder AYS plugin <= 1.8.2 - Cross Site Scripting (XSS) vulnerability CVE-2024-1266 CodeAstro University Management System Student Registration Form st_reg.php cross site scripting