VULNERABILITY INTELLIGENCE

CVE-2021-39320

CVSS score6.1 MEDIUM
EPSS probability2.32%
CISA KEVNot currently listed
Published2021-09-01
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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.

Weakness classification

  • security@wordfence.com: CWE-79
  • nvd@nist.gov: CWE-79

Primary references