VULNERABILITY INTELLIGENCE
CVE-2021-34667
CVSS score6.1 MEDIUM
EPSS probability0.90%
CISA KEVNot currently listed
Published2021-08-16
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 Calendar_plugin WordPress plugin is vulnerable to Reflected Cross-Site Scripting due to the use of `$_SERVER['PHP_SELF']` in the ~/calendar.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 1.0.
Weakness classification
- security@wordfence.com: CWE-79
- nvd@nist.gov: CWE-79
Primary references
- security@wordfence.com — Exploit, Third Party Advisory
- security@wordfence.com — Exploit, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory