CVE-2025-11879
📋 TL;DR
The GenerateBlocks WordPress plugin has an authorization bypass vulnerability that allows authenticated users with contributor-level access or higher to read arbitrary WordPress options. This exposes sensitive configuration data like SMTP credentials and API keys stored by WordPress and other plugins. All WordPress sites using GenerateBlocks version 2.1.1 or earlier are affected.
💻 Affected Systems
- GenerateBlocks 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 gain access to administrative credentials, API keys, and sensitive configuration data, leading to complete site compromise, data theft, and lateral movement to other systems.
Likely Case
Attackers extract SMTP credentials, API keys, and other plugin configuration data, enabling email spoofing, unauthorized API access, and further exploitation of other vulnerabilities.
If Mitigated
With proper access controls and monitoring, exploitation is detected early, limiting data exposure to non-critical configuration options.
🎯 Exploit Status
Exploitation requires authenticated access at contributor level or higher. No public exploit code is known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 2.1.2 or later
Vendor Advisory: https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.1.2
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find GenerateBlocks and click 'Update Now'. 4. Verify update completes successfully.
🔧 Temporary Workarounds
Restrict User Roles
allTemporarily remove contributor-level access from untrusted users until patching is complete.
Disable Plugin
allDeactivate GenerateBlocks plugin if not essential for site functionality.
🧯 If You Can't Patch
- Implement strict access controls to limit contributor-level accounts to trusted users only.
- Monitor WordPress REST API logs for unusual access patterns to plugin endpoints.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for GenerateBlocks version number. If version is 2.1.1 or earlier, the system is vulnerable.Check Version:
wp plugin list --name=generateblocks --field=versionVerify Fix Applied:
After updating, verify GenerateBlocks version shows 2.1.2 or later in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual REST API requests to GenerateBlocks endpoints from contributor-level users
- Multiple failed authentication attempts followed by successful contributor-level login
Network Indicators:
- HTTP POST requests to /wp-json/generateblocks/v1/get_option containing unusual option names
SIEM Query:
source="wordpress.log" AND (uri_path="/wp-json/generateblocks/v1/get_option" OR plugin="GenerateBlocks") AND user_role IN ("contributor", "author", "editor")🔗 References
- https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.1.1/includes/class-meta-handler.php#L19
- https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.1.1/includes/class-meta-handler.php#L356
- https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.1.1/includes/class-meta-handler.php#L78
- https://www.wordfence.com/threat-intel/vulnerabilities/id/5f1ba1c7-de88-4070-a4ec-fbe4a0c30920?source=cve
