What’s Vulnerable › Vulnerabilities

CVE-2023-2407: Event Registration Calendar By vcita <= 1.3.1 & Online Payments – Get Paid with PayPal, Square & Stripe <= 3.10.0 - Cross-Site Request Forgery to Stored Cross-Site Scripting

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-06-03 · updated 2026-06-17
• Weakness: CWE-352

Description

The Event Registration Calendar By vcita plugin, versions up to and including 3.10.0, and Online Payments – Get Paid with PayPal, Square & Stripe plugin, for WordPress are vulnerable to Cross-Site Request Forgery. This is due to missing nonce validation in the ls_parse_vcita_callback() function. This makes it possible for unauthenticated attackers to modify the plugin's settings and inject malicious JavaScript via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected products

• vcita Event Registration Calendar By vcita: through 3.9.1
• vcita Online Payments – Get Paid with PayPal, Square & Stripe: through 1.3.1

References

• https://blog.jonh.eu/blog/security-vulnerabilities-in-wordpress-plugins-by-vcita
• https://plugins.trac.wordpress.org/browser/event-registration-calendar-by-vcita/trunk/system/parse_vcita_callback.php#L55
• https://plugins.trac.wordpress.org/browser/paypal-payment-button-by-vcita/trunk/system/parse_vcita_callback.php
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3215558%40paypal-payment-button-by-vcita%2Ftrunk&old=2965959%40paypal-payment-button-by-vcita%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/207b40fa-2062-48d6-990b-f05cbbf8fb8e?source=cve
• https://blog.jonh.eu/blog/security-vulnerabilities-in-wordpress-plugins-by-vcita
• https://plugins.trac.wordpress.org/browser/event-registration-calendar-by-vcita/trunk/system/parse_vcita_callback.php#L55
• https://plugins.trac.wordpress.org/browser/paypal-payment-button-by-vcita/trunk/system/parse_vcita_callback.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/207b40fa-2062-48d6-990b-f05cbbf8fb8e?source=cve

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