CVE-2024-30528
📋 TL;DR
This CVE describes a Missing Authorization vulnerability in the Spiffy Calendar WordPress plugin, allowing unauthorized users to perform actions intended only for authenticated administrators. It affects all versions up to and including 4.9.10. WordPress sites using this plugin are vulnerable.
💻 Affected Systems
- Spiffy Calendar WordPress Plugin
📦 What is this software?
Spiffy Calendar by Spiffyplugins
⚠️ Risk & Real-World Impact
Worst Case
Unauthenticated attackers could modify calendar events, delete content, or potentially escalate privileges to gain administrative control over the WordPress site.
Likely Case
Unauthorized users could tamper with calendar data, disrupt site functionality, or deface public-facing calendar content.
If Mitigated
With proper access controls and network segmentation, impact is limited to unauthorized calendar modifications within the plugin's scope.
🎯 Exploit Status
Missing authorization vulnerabilities typically require minimal technical skill to exploit once the attack vector is identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.9.11 or later
Vendor Advisory: https://patchstack.com/database/vulnerability/spiffy-calendar/wordpress-spiffy-calendar-plugin-4-9-10-broken-access-control-vulnerability
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Spiffy Calendar and click 'Update Now'. 4. Verify version is 4.9.11 or higher.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the Spiffy Calendar plugin until patched
wp plugin deactivate spiffy-calendar
Restrict Access
allUse web application firewall rules to block unauthorized access to plugin endpoints
🧯 If You Can't Patch
- Implement strict network access controls to limit who can reach the WordPress admin interface
- Enable WordPress security plugins with authorization monitoring and intrusion detection
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for Spiffy Calendar version 4.9.10 or earlierCheck Version:
wp plugin get spiffy-calendar --field=versionVerify Fix Applied:
Confirm Spiffy Calendar version is 4.9.11 or higher in WordPress admin📡 Detection & Monitoring
Log Indicators:
- Unauthorized POST requests to /wp-admin/admin-ajax.php with spiffy_calendar actions
- Failed authorization attempts for calendar management functions
Network Indicators:
- Unusual traffic patterns to calendar-related endpoints from unauthenticated sources
SIEM Query:
source="wordpress.log" AND ("spiffy_calendar" OR "admin-ajax.php") AND (status=200 OR status=403) AND user="-"