CVE-2021-39320 is a reflected Cross-Site Scripting (XSS) vulnerability affecting the underConstruction plugin versions <= 1.18 for WordPress. It arises from the plugin echoing the raw value of $GLOBALS['PHP_SELF'], allowing attackers to inject malicious code via the request path on specific configurations like Apache+modPHP. Rated 6.1 MEDIUM (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N), this vulnerability requires user interaction and could lead to information disclosure and limited integrity impact. There is no evidence of active exploitation, though Nuclei templates exist for detection, and there is minimal community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.19CPE matchmatch criteria | cpe:2.3:a:underconstruction_project:underconstruction:*:*:*:*:*:wordpress:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.