CVE-2021-34667

medium

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.

References

https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34667

https://plugins.trac.wordpress.org/browser/calendar-plugin/trunk/calendar.php#L86

Details

Source: Mitre, NVD

Published: 2021-08-16

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.1

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