CVE-2025-27346
📋 TL;DR
This reflected cross-site scripting (XSS) vulnerability in the WordPress Rebuild Permalinks plugin allows attackers to inject malicious scripts into web pages viewed by other users. Attackers can steal session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users. All WordPress sites using vulnerable versions of the Rebuild Permalinks plugin are affected.
💻 Affected Systems
- WordPress Rebuild Permalinks 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 steal administrator session cookies, gain full administrative access to the WordPress site, install backdoors, deface the site, or steal sensitive user data.
Likely Case
Attackers craft malicious links containing XSS payloads, trick users into clicking them, and steal their session cookies to hijack accounts or perform unauthorized actions.
If Mitigated
With proper input validation and output encoding, the malicious scripts would be neutralized, preventing execution in users' browsers.
🎯 Exploit Status
Reflected XSS vulnerabilities are commonly exploited and require minimal technical skill. Attackers need to trick users into clicking malicious links.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.7 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Rebuild Permalinks and click 'Update Now'. 4. If update not available, deactivate and delete the plugin, then install version 1.7+ from WordPress repository.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily deactivate the Rebuild Permalinks plugin until patched
wp plugin deactivate rebuild-permalinks
Implement WAF rules
allConfigure web application firewall to block XSS payload patterns
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Use browser security extensions that block reflected XSS attacks
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for Rebuild Permalinks version 1.6 or earlierCheck Version:
wp plugin get rebuild-permalinks --field=versionVerify Fix Applied:
Verify plugin version is 1.7 or later in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual GET/POST requests containing script tags or JavaScript code to plugin endpoints
- Multiple failed login attempts following suspicious URL parameters
Network Indicators:
- HTTP requests with suspicious parameters containing <script>, javascript:, or encoded payloads
SIEM Query:
source="web_server_logs" AND (uri="*rebuild-permalinks*" AND (param="*<script>*" OR param="*javascript:*" OR param="*%3Cscript%3E*"))