CVE-2025-22535
📋 TL;DR
This SQL injection vulnerability in the WPListCal WordPress plugin allows attackers to execute arbitrary SQL commands on the database. It affects all WordPress sites running WPListCal version 1.3.5 or earlier. Successful exploitation could lead to data theft, modification, or deletion.
💻 Affected Systems
- WPListCal WordPress plugin
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data exfiltration, privilege escalation, or site takeover
Likely Case
Unauthorized data access or modification of plugin-related database tables
If Mitigated
Limited impact with proper input validation and database permissions
🎯 Exploit Status
SQL injection typically requires some level of access or user interaction
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 1.3.5
Vendor Advisory: https://patchstack.com/database/wordpress/plugin/wplistcal/vulnerability/wordpress-wplistcal-plugin-1-3-5-sql-injection-vulnerability?_s_id=cve
Restart Required: No
Instructions:
1. Log into WordPress admin panel
2. Navigate to Plugins > Installed Plugins
3. Find WPListCal and update to latest version
4. If no update available, deactivate and remove the plugin
🔧 Temporary Workarounds
Input Validation Filter
allAdd custom input validation for WPListCal parameters
Add parameter sanitization in theme functions.php or custom plugin
🧯 If You Can't Patch
- Deactivate and remove the WPListCal plugin immediately
- Implement web application firewall (WAF) rules to block SQL injection patterns
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin > Plugins > Installed Plugins for WPListCal version 1.3.5 or earlierCheck Version:
wp plugin list --name=wplistcal --field=version (if WP-CLI installed)Verify Fix Applied:
Confirm WPListCal is updated to version after 1.3.5 or completely removed📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts or parameter manipulation in web server logs
Network Indicators:
- Suspicious POST/GET requests with SQL syntax in parameters
SIEM Query:
source="web_server" AND ("sql" OR "union" OR "select" OR "insert") AND "wplistcal"