Simply Schedule AppointmentsWordPress extension · Nsqua
CVE-2023-50851
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 · uneditedImproper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in N Squared Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin.This issue affects Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin: from n/a before 1.6.6.1.
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 confidenceSQL injection vulnerability in the Simply Schedule Appointments WordPress plugin allows attackers to inject malicious SQL commands via improper neutralization of special elements in SQL queries, affecting versions before 1.6.6.1.
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
Simply Schedule AppointmentsWordPress extension
< 1.6.6.1CVSS 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
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/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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Check installed plugin version via WordPress adminLog in to WordPress admin dashboard, go to Plugins > Installed Plugins, locate Simply Schedule Appointments, and record the version number displayedAffected if Version shown is below 1.6.6.1
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Verify plugin is active and accessibleConfirm the Simply Schedule Appointments plugin is currently activated and accessible on the website frontendAffected if Plugin is activated and version is below 1.6.6.1
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Check plugin files directly for version headerAccess the plugin directory via file manager or FTP at wp-content/plugins/simply-schedule-appointments/ and open the main plugin PHP file to read the Version header in the plugin metadata comment blockAffected if Version header in the plugin file shows a version less than 1.6.6.1
The environment is affected if the Simply Schedule Appointments plugin is installed, activated, and running a version lower than 1.6.6.1
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.
dbcve · scoped1.6.6.1
Update Simply Schedule Appointments plugin to version 1.6.6.1 or later to remediate the SQL injection vulnerability.
1.6.6.1 or later
- 1. Log in to the WordPress admin dashboard
- 2. Navigate to Plugins > Installed Plugins
- 3. Locate Simply Schedule Appointments in the plugin list
- 4. Check if the current version is below 1.6.6.1
- 5. If vulnerable, click 'Update Now' to upgrade to version 1.6.6.1 or later
- 6. After update, verify the new version number in the plugins list
- 7. Test appointment booking functionality to ensure the update did not break expected features
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Simply Schedule Appointments
Scoped from the published advisory
- Consultation2.0 h
- Implementation2.0 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 $1,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-50851 — 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-2023-50851 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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