Security readout for executives and security teams
Plain-English summary
This flaw lets an attacker trick a site user into triggering a logout of the connected vcita account. The likely business impact is disruption of appointment scheduling, not data theft. It is rated medium severity and requires user interaction.
Executive priority
Treat as a moderate operational risk for websites that depend on online booking. Prioritize updates for revenue-facing appointment flows, but this is not evidenced as data theft or active mass exploitation in the provided sources.
Technical view
CVE-2023-2416 is a CSRF issue in the WordPress vcita booking plugin through version 4.5. The vcita_logout_callback lacked a nonce check, allowing an unauthenticated forged request to disconnect or log out the vcita-linked account, causing scheduler denial of service.
Likely exposure
Exposure is limited to WordPress sites using Online Booking & Scheduling Calendar for WordPress by vcita version 4.5 or earlier, especially where the scheduler is actively connected to a vcita account.
Exploitation context
The source bundle reports no KEV listing. Exploitation requires convincing a site user to take an action such as clicking a link. The CVSS vector indicates network access, low complexity, no privileges, required user interaction, and limited integrity and availability impact.
Researcher notes
The core weakness is CWE-352, missing anti-CSRF nonce validation on a logout callback. The source bundle cites a WordPress Trac code location and later changeset, but does not provide exploit telemetry or a detailed vendor advisory.
Mitigation direction
- Inventory WordPress sites for the vcita booking plugin and installed version.
- Update affected installations to a vendor-supported version newer than 4.5 where available.
- Check vendor and WordPress plugin guidance for the exact fixed release.
- Temporarily restrict administrative browsing risk until affected plugins are updated.
- Confirm the vcita scheduler account remains connected after remediation.
Validation and detection
- Check plugin version on each WordPress instance for version 4.5 or earlier.
- Review deployed plugin code for nonce validation in vcita_logout_callback.
- Confirm appointment scheduling remains functional after update or mitigation.
- Monitor reports of unexpected vcita account logout or scheduler disruption.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-352: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2023-2416 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L2.82.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f434585c-8533-4788-b0bc-5650390c29a8?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/meeting-scheduler-by-vcita/trunk/vcita-ajax-function.php#L55CVE reference
- https://blog.jonh.eu/blog/security-vulnerabilities-in-wordpress-plugins-by-vcitaCVE reference
- https://plugins.trac.wordpress.org/changeset/3200129/meeting-scheduler-by-vcita/trunk/vcita-ajax-function.php?old=3191356&old_path=meeting-scheduler-by-vcita%2Ftrunk%2Fvcita-ajax-function.phpCVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Cross-Site Request Forgery (CSRF)
Cross-Site Request Forgery (CSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.