CVE-2026-3056
📋 TL;DR
The Seraphinite Accelerator WordPress plugin has an authorization vulnerability that allows authenticated users with Subscriber-level access or higher to clear the plugin's debug/operational logs. This affects all versions up to 2.28.14. Attackers can delete log data that might be needed for troubleshooting or security investigations.
💻 Affected Systems
- Seraphinite Accelerator 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
Attackers delete critical debug logs needed to investigate security incidents, potentially covering tracks of other attacks or preventing administrators from diagnosing plugin issues.
Likely Case
Malicious users clear logs to hide their activities or disrupt troubleshooting efforts, though no direct data theft or system compromise occurs.
If Mitigated
Logs are preserved for legitimate troubleshooting and security monitoring purposes.
🎯 Exploit Status
Exploitation requires sending a crafted AJAX request to the vulnerable endpoint. No public exploit code has been observed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.28.15 and later
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3468084/seraphinite-accelerator/trunk/main.php?contextall=1
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Seraphinite Accelerator and click 'Update Now'. 4. Alternatively, download version 2.28.15+ from WordPress plugin repository and manually update.
🔧 Temporary Workarounds
Disable vulnerable AJAX endpoint
allRemove or restrict access to the vulnerable seraph_accel_api AJAX handler with fn=LogClear parameter.
Add to theme's functions.php or custom plugin: add_filter('wp_ajax_seraph_accel_api', 'restrict_log_clear', 1, 1); function restrict_log_clear($data) { if (isset($data['fn']) && $data['fn'] === 'LogClear') { wp_die('Unauthorized'); } }
Restrict user capabilities
allLimit Subscriber role permissions to prevent exploitation.
Use WordPress role management plugin or add to functions.php: remove_cap('subscriber', 'read'); // Caution: may break legitimate functionality
🧯 If You Can't Patch
- Temporarily disable the Seraphinite Accelerator plugin if not essential.
- Implement strict access controls and monitor for suspicious AJAX requests to seraph_accel_api endpoints.
🔍 How to Verify
Check if Vulnerable:
Check plugin version in WordPress admin under Plugins → Installed Plugins. If version is 2.28.14 or lower, system is vulnerable.Check Version:
wp plugin list --name=seraphinite-accelerator --field=version (if WP-CLI installed) or check WordPress admin interface.Verify Fix Applied:
Confirm plugin version is 2.28.15 or higher. Test that Subscriber users cannot clear logs via AJAX requests.📡 Detection & Monitoring
Log Indicators:
- Unusual AJAX requests to /wp-admin/admin-ajax.php with action=seraph_accel_api and fn=LogClear from non-admin users
- Sudden disappearance of Seraphinite Accelerator log files
Network Indicators:
- POST requests to admin-ajax.php with seraph_accel_api action from unauthorized IPs
SIEM Query:
source="*access.log*" AND "admin-ajax.php" AND "seraph_accel_api" AND "LogClear" AND NOT user_role="administrator"🔗 References
- https://plugins.trac.wordpress.org/browser/seraphinite-accelerator/trunk/Cmn/Plugin.php#L598
- https://plugins.trac.wordpress.org/browser/seraphinite-accelerator/trunk/main.php#L2459
- https://plugins.trac.wordpress.org/changeset/3468084/seraphinite-accelerator/trunk/main.php?contextall=1
- https://www.wordfence.com/threat-intel/vulnerabilities/id/96850eb6-77d8-4012-b360-a417918cab0e?source=cve
