CVE-2026-22346
📋 TL;DR
This CVE describes a PHP object injection vulnerability in the WordPress Slider Responsive Slideshow plugin, allowing attackers to execute arbitrary code through deserialization of untrusted data. It affects all WordPress sites running the plugin version 1.5.4 or earlier. Successful exploitation could lead to complete site compromise.
💻 Affected Systems
- Slider Responsive Slideshow – Image slider, Gallery slideshow
⚠️ 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
Remote code execution leading to complete server takeover, data theft, malware deployment, and persistent backdoor installation.
Likely Case
Arbitrary code execution within WordPress context, allowing plugin/theme modification, admin user creation, or site defacement.
If Mitigated
Limited impact if proper input validation and output encoding are implemented elsewhere in the stack.
🎯 Exploit Status
Deserialization vulnerabilities are commonly exploited with publicly available tools. WordPress plugins are frequent targets.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: >1.5.4
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Slider Responsive Slideshow'. 4. Click 'Update Now' if update available. 5. If no update, deactivate and delete plugin immediately.
🔧 Temporary Workarounds
Disable Plugin
allDeactivate the vulnerable plugin to prevent exploitation.
wp plugin deactivate slider-responsive-slideshow
Remove Plugin Files
linuxCompletely remove the plugin files from the server.
rm -rf /path/to/wp-content/plugins/slider-responsive-slideshow/
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block deserialization attempts
- Restrict plugin access to authenticated users only if possible
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Slider Responsive Slideshow version. If version <=1.5.4, vulnerable.Check Version:
wp plugin get slider-responsive-slideshow --field=versionVerify Fix Applied:
Verify plugin version is >1.5.4 in WordPress admin or check plugin directory for updated files.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints
- PHP deserialization errors in logs
- Unexpected file creation in wp-content
Network Indicators:
- HTTP requests containing serialized PHP objects
- Traffic to known exploit paths for this plugin
SIEM Query:
source="web_logs" AND (uri_path="*slider-responsive-slideshow*" AND (method="POST" OR status="500"))