CVE-2024-34816
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedCross-Site Request Forgery (CSRF) vulnerability in Revmakx WPCal.Io – Easy Meeting Scheduler.This issue affects WPCal.Io – Easy Meeting Scheduler: from n/a through 0.9.5.8.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceA Cross-Site Request Forgery (CSRF) vulnerability exists in the WPCal.Io WordPress plugin (versions up to 0.9.5.8). The plugin fails to properly validate the origin of requests, allowing attackers to trick authenticated users into executing unintended administrative actions via maliciously crafted web pages.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check if WPCal.Io plugin is installedNavigate to WordPress admin dashboard > Plugins > Installed Plugins and look for 'WPCal.Io' in the list. Alternatively, check the /wp-content/plugins/ directory for a folder named 'wpcal' or similar.Affected if The WPCal.Io plugin appears in the installed plugins list
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Determine installed version of WPCal.IoIn the Plugins page, click 'View Details' on the WPCal.Io plugin to display the version number. Note that versions up to and including 0.9.5.8 are affected.Affected if The displayed version number is 0.9.5.8 or lower
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Inspect plugin code for WordPress nonce implementationAccess the plugin files via FTP or file manager. Examine PHP files that handle form submissions or AJAX requests (typically in main plugin file or includes/admin/). Search for 'wp_nonce_field' or 'wp_verify_nonce' function calls.Affected if No nonce verification functions are found in form-handling code, or nonces are present but not verified before processing requests
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Check for Origin or Referer header validationReview the same PHP files for server-side checks of $_SERVER['HTTP_ORIGIN'] or $_SERVER['HTTP_REFERER'] to validate request origin before executing state-changing operations.Affected if No Origin or Referer header validation exists in the plugin's request handling code
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Identify unprotected admin action handlersSearch plugin PHP files for add_action calls hooked to 'admin_init', 'init', or AJAX endpoints. Verify each handler that performs administrative tasks (settings changes, user data modifications) includes nonce validation before execution.Affected if Administrative action handlers exist that process requests without verifying nonce tokens or request origin
You are affected if the WPCal.Io plugin is installed with version 0.9.5.8 or lower AND the plugin lacks proper WordPress nonce verification on its state-changing operations.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement WordPress nonces on all state-changing operations (forms, AJAX calls) and verify nonce validation on the server side. Additionally, check Origin/Referer headers to ensure requests originate from trusted sources.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-34816 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2024-34816 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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