CVE-2021-34644

EUVD-2021-21294
The Multiplayer Games WordPress plugin is vulnerable to Reflected Cross-Site Scripting due to the use of $_SERVER['PHP_SELF'] in the ~/multiplayergames.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 3.7.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.1 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
WordfenceCNA
6.1 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 43%
Affected Products (NVD)
VendorProductVersion
multiplayer-plugin_projectmultiplayer-plugin
𝑥
≤ 3.7
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://plugins.trac.wordpress.org/browser/multiplayer-plugin/trunk/multiplayergames.php#L662
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34644
https://plugins.trac.wordpress.org/browser/multiplayer-plugin/trunk/multiplayergames.php#L662
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34644