CVE-2023-2416 — The Online Booking & Scheduling Calendar for WordPress by vcita plugin for WordP

The Online Booking & Scheduling Calendar for WordPress by vcita plugin for WordPress is vulnerable to Cross-Site Request Forgery due to a missing nonce check on the vcita_logout_callback function in versions up to, and including, 4.5. This makes it possible for unauthenticate

01What is this vulnerability?

The Online Booking & Scheduling Calendar for WordPress by vcita plugin for WordPress is vulnerable to Cross-Site Request Forgery due to a missing nonce check on the vcita_logout_callback function in versions up to, and including, 4.5. This makes it possible for unauthenticated to logout a vctia connected account which would cause a denial of service on the appointment scheduler, via a forged…

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-06-03T05:15:09.903
• Last modified: 2026-04-08T19:18:14.990

09References

• blog.jonh.eu — https://blog.jonh.eu/blog/security-vulnerabilities-in-wordpress-plugins-by-vcita
• plugins.trac.wordpress.org — https://plugins.trac.wordpress.org/browser/meeting-scheduler-by-vcita/trunk/vcit…
• plugins.trac.wordpress.org — https://plugins.trac.wordpress.org/changeset/3200129/meeting-scheduler-by-vcita/…
• www.wordfence.com — https://www.wordfence.com/threat-intel/vulnerabilities/id/f434585c-8533-4788-b0b…
• blog.jonh.eu — https://blog.jonh.eu/blog/security-vulnerabilities-in-wordpress-plugins-by-vcita
• plugins.trac.wordpress.org — https://plugins.trac.wordpress.org/browser/meeting-scheduler-by-vcita/trunk/vcit…
• www.wordfence.com — https://www.wordfence.com/threat-intel/vulnerabilities/id/f434585c-8533-4788-b0b…