Spiffy CalendarWordPress extension · Spiffyplugins
CVE-2024-30427
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 allows Reflected XSS.This issue affects Spiffy Calendar: from n/a through 4.9.7.
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 confidenceThis is a reflected Cross-site Scripting (XSS) vulnerability in the Spiffy Calendar plugin where user-supplied input is not properly sanitized before being rendered in a web page. An attacker can inject malicious JavaScript code via a crafted URL that gets reflected back to the victim, executing in their browser context.
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
< 4.9.10CVSS 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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Check installed Spiffy Calendar versionLocate the plugin in your WordPress installation (typically in wp-content/plugins/spiffy-calendar or similar). Open the main plugin file or readme.txt and find the version number in the plugin header.Affected if The version listed is below 4.9.10 (for example, 4.9.9, 4.9.8, etc.)
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Confirm plugin is activeLog into WordPress admin panel and navigate to Plugins > Installed Plugins. Verify that Spiffy Calendar appears in the list and is marked as 'Active'.Affected if The plugin is installed and activated in WordPress, and the version is below 4.9.10
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Identify accessible input pointsReview pages where Spiffy Calendar renders content. Look for URL parameters, form inputs, or query strings that the plugin processes and displays back in the page output.Affected if The plugin processes and reflects user-supplied parameters in its output without sanitization, and the version is below 4.9.10
You are affected if Spiffy Calendar plugin version is below 4.9.10 and the plugin is active on your WordPress site with user-accessible input points that reflect data without proper sanitization.
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 · scoped4.9.10
Implement proper input validation and output encoding/escaping for all user-supplied data before rendering it in HTML. Use context-aware escaping functions and consider implementing a Content Security Policy (CSP) as a defense-in-depth measure.
Spiffy Calendar version 4.9.10 or later
- Log in to the WordPress admin dashboard
- Navigate to Plugins > Installed Plugins
- Find 'Spiffy Calendar' in the plugin list
- Click 'Update now' if an update is available, or manually download version 4.9.10 or later from the WordPress plugin repository
- Verify the update was successful by checking the plugin version
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Spiffy Calendar
Scoped from the published advisory
- Consultation3.0 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 $2,304.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-30427 — 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-2024-30427 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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