Webba BookingWordPress extension
CVE-2023-51354
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 WebbaPlugins Appointment & Event Booking Calendar Plugin – Webba Booking.This issue affects Appointment & Event Booking Calendar Plugin – Webba Booking: from n/a through 4.5.33.
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 · high confidenceCross-Site Request Forgery (CSRF) vulnerability in Webba Booking plugin allows attackers to execute unauthorized actions by tricking authenticated users into submitting malicious requests. The high CVSS score (8.8) indicates significant impact, likely enabling attackers to create, modify, or delete appointments, or potentially access sensitive booking data without proper nonce validation on form submissions and admin actions.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data
Webba BookingWordPress extension
<= 4.5.33CVSS 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
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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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Confirm Webba Booking plugin is installedIn WordPress admin, go to Plugins > Installed Plugins and locate Webba Booking. Note the version number displayed.Affected if The installed version is 4.5.33 or lower.
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Identify booking management admin actionsSearch plugin files (typically in wp-content/plugins/webba-booking/) for action hooks handling booking creation, modification, or deletion (e.g., 'wplb_save_booking', 'webba_create_appointment').Affected if The code contains admin action handlers without wp_nonce_field() or wp_verify_nonce() calls.
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Inspect AJAX endpoint nonce validationExamine PHP files handling AJAX requests (look for wp_ajax_ and wp_ajax_nopriv_ hooks). Check if each callback includes nonce verification before processing requests.Affected if AJAX handlers process requests without validating a nonce token server-side.
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Review frontend booking form nonce implementationLocate PHP templates that render booking forms. Verify each <form> tag includes a hidden nonce field and that the form handler validates it.Affected if Booking forms submit without nonce fields or the submitted nonce is not verified on receipt.
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Check state-changing admin page actionsScan admin-post.php and admin-ajax.php handlers for booking operations. Confirm they verify nonce tokens before executing database changes.Affected if Admin actions modify or delete bookings without proper nonce verification.
You are affected if Webba Booking plugin version 4.5.33 or lower is installed AND the plugin code lacks nonce validation on form submissions or AJAX/admin action handlers.
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 forms and AJAX endpoints, and verify nonce validation on server-side processing. Ensure all booking management actions require valid authentication tokens to prevent forged requests.
Fix this in Webba Booking
Scoped from the published advisory
- Consultation2.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,664.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-51354 — 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-2023-51354 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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