CVE-2025-58807
📋 TL;DR
A Cross-Site Request Forgery (CSRF) vulnerability in the Dsingh Purge Varnish Cache WordPress plugin allows attackers to trick authenticated administrators into performing unintended actions, which can lead to stored cross-site scripting (XSS). This affects all WordPress sites using Purge Varnish Cache versions up to 2.6. Attackers can inject malicious scripts that execute when other users visit affected pages.
💻 Affected Systems
- Dsingh Purge Varnish Cache 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 inject persistent malicious scripts that steal administrator credentials, hijack user sessions, deface websites, or redirect users to malicious sites whenever vulnerable pages are visited.
Likely Case
Attackers create fake purge requests or inject basic XSS payloads to perform actions as administrators, potentially modifying plugin settings or injecting ads/malware.
If Mitigated
With proper CSRF tokens and input validation, the vulnerability is prevented; administrators would need to intentionally bypass security controls for exploitation.
🎯 Exploit Status
Exploitation requires tricking an authenticated administrator into clicking a malicious link; CSRF to XSS chain is well-documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.7 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Purge Varnish Cache' and click 'Update Now'. 4. Alternatively, download version 2.7+ from WordPress repository and manually replace files.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily deactivate the Purge Varnish Cache plugin until patched.
wp plugin deactivate purge-varnish-cache
Implement CSRF Protection
allAdd custom CSRF tokens to plugin forms if you cannot update immediately.
🧯 If You Can't Patch
- Restrict administrator access to trusted networks only.
- Implement web application firewall (WAF) rules to block suspicious purge requests and XSS payloads.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin > Plugins > Installed Plugins for 'Purge Varnish Cache' version; if version is 2.6 or lower, you are vulnerable.Check Version:
wp plugin get purge-varnish-cache --field=versionVerify Fix Applied:
After update, verify plugin version shows 2.7 or higher in WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /wp-admin/admin-post.php with purge_varnish action from unexpected IPs.
- JavaScript payloads in plugin settings or cache purge logs.
Network Indicators:
- HTTP requests containing 'purge_varnish' action without proper referrer headers or CSRF tokens.
SIEM Query:
source="wordpress.log" AND "purge_varnish" AND ("POST" OR "admin-post.php")