CVE-2025-23901
📋 TL;DR
A Cross-Site Request Forgery (CSRF) vulnerability in the Oliver Schaal GravatarLocalCache WordPress plugin allows attackers to trick authenticated administrators into performing unintended actions. This affects all WordPress sites using GravatarLocalCache versions up to and including 1.1.2.
💻 Affected Systems
- Oliver Schaal GravatarLocalCache 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 could chain this CSRF with stored XSS to compromise administrator accounts, deface websites, or install backdoors.
Likely Case
Attackers could modify plugin settings, potentially disabling security features or altering functionality.
If Mitigated
With proper CSRF protections and user awareness, exploitation attempts would fail.
🎯 Exploit Status
Exploitation requires social engineering to trick authenticated users into clicking malicious links.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.1.3 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find GravatarLocalCache and click 'Update Now' if available. 4. If no update appears, manually download version 1.1.3+ from WordPress repository and replace files via FTP/SFTP.
🔧 Temporary Workarounds
Temporary Plugin Deactivation
WordPressDisable the vulnerable plugin until patched version is available.
wp plugin deactivate gravatarlocalcache
🧯 If You Can't Patch
- Disable GravatarLocalCache plugin entirely.
- Implement additional CSRF protections at web application firewall level.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for GravatarLocalCache version 1.1.2 or earlier.Check Version:
wp plugin get gravatarlocalcache --field=versionVerify Fix Applied:
Confirm plugin version is 1.1.3 or later in WordPress admin plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to GravatarLocalCache admin endpoints without referrer headers.
- Multiple failed CSRF token validations in WordPress debug logs.
Network Indicators:
- HTTP requests to wp-admin/admin.php?page=gravatarlocalcache with missing or invalid nonce parameters.
SIEM Query:
source="wordpress.log" AND "gravatarlocalcache" AND ("nonce" OR "csrf")