Spiffy CalendarWordPress extension · Spiffyplugins
CVE-2024-45458
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 Input During Web Page Generation ('Cross-site Scripting') vulnerability in Spiffy Plugins Spiffy Calendar spiffy-calendar allows Reflected XSS.This issue affects Spiffy Calendar: from n/a through <= 4.9.13.
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 reflected XSS vulnerability in the Spiffy Calendar WordPress plugin allows attackers to inject malicious JavaScript code via unsanitized user input that gets rendered in web pages without proper encoding. The vulnerability affects versions up to and including 4.9.13.
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
Spiffy CalendarWordPress extension
< 4.9.14CVSS 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
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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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Verify Spiffy Calendar plugin is installedLog into WordPress admin and navigate to Plugins > Installed Plugins, or inspect the plugin directory at wp-content/plugins/spiffy-calendar/Affected if The Spiffy Calendar plugin is present on the WordPress site
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Check installed plugin versionIn WordPress admin, find Spiffy Calendar in the plugins list and note the version number displayed, or open the main plugin file (e.g., spiffy-calendar.php) and locate the Version header commentAffected if The installed version is 4.9.13 or lower (any version below 4.9.14)
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Identify user input points in the pluginExamine plugin files for form fields, URL parameters, or query string variables that accept user input and are later displayed in page output without encodingAffected if The plugin accepts user input through GET or POST parameters that get reflected in output pages
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Confirm lack of output encoding on user inputTest by submitting special characters (e.g., <script>alert(1)</script>) through any plugin input fields or URL parameters and inspect the page source to see if characters are rendered as-is or properly encodedAffected if User-supplied characters appear unescaped in the page output (e.g., <script> renders as literal text rather than <script>)
You are affected if the Spiffy Calendar plugin is installed with version 4.9.13 or lower and any user input from the plugin is reflected in web pages without HTML entity encoding.
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 · scoped4.9.14
Update to the latest version of Spiffy Calendar once the vendor releases a patch that implements proper input sanitization and output encoding to prevent script injection.
4.9.14
- 1. Create a complete backup of your WordPress site including the database and all files
- 2. Navigate to Plugins > Installed Plugins in your WordPress admin dashboard
- 3. Find 'Spiffy Calendar' in the plugin list
- 4. Click 'Update now' if an update is available, or manually upload version 4.9.14 of the plugin
- 5. Verify the plugin version shows 4.9.14 after updating
- 6. Clear any site caches if you use caching plugins
- 7. Test the calendar functionality to ensure it works correctly after the update
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Spiffy Calendar
Scoped from the published advisory
- Consultation2.0 h
- Implementation4.0 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 $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-45458 — 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-2024-45458 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
- No spam, self-promotion, credentials, or personal data