Stored Cross-Site Scripting Vulnerability in Webnus Modern Events Calendar Lite Plugin
CVE-2020-9459

5.4MEDIUM

Key Information:

Vendor

Wordpress
Status
Modern Events Calendar Lite
Vendor
CVE Published:
28 February 2020

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2020-9459?

The Webnus Modern Events Calendar Lite plugin for WordPress has multiple vulnerabilities that allow remote authenticated users with minimal permissions to execute arbitrary scripts within the application. These vulnerabilities primarily involve Ajax actions that enable the injection of JavaScript, HTML, or CSS through specific functionalities like mec_save_notifications and import_settings. Exploitation of these vulnerabilities could lead to unauthorized actions, potentially compromising the integrity and security of the affected sites.

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Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2020-9459 - Proof of Concept

References

https://wpvulndb.com/vulnerabilities/10100
x_refsource_MISC
https://www.wordfence.com/blog/2020/02/site-takeover-camp...
x_refsource_MISC

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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