CVE-2025-62761
📋 TL;DR
This stored XSS vulnerability in the BasePress WordPress plugin allows attackers to inject malicious scripts into knowledge base pages. When users view compromised pages, the scripts execute in their browsers, potentially stealing credentials or performing unauthorized actions. All WordPress sites using BasePress versions up to 2.17.0.1 are affected.
💻 Affected Systems
- BasePress Knowledge Base documentation & wiki 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 credentials, take over the WordPress site, deface content, or redirect users to malicious sites, potentially leading to complete site compromise and data theft.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies or credentials, enabling account takeover and unauthorized content modification.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized, preventing execution while maintaining functionality.
🎯 Exploit Status
Stored XSS vulnerabilities are commonly exploited, though specific exploit details for this CVE aren't publicly documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.17.0.2 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find BasePress and click 'Update Now'. 4. Verify update to version 2.17.0.2 or higher.
🔧 Temporary Workarounds
Disable BasePress Plugin
allTemporarily disable the vulnerable plugin until patching is possible.
wp plugin deactivate basepress
Implement WAF Rules
allConfigure web application firewall to block XSS payloads targeting BasePress endpoints.
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to restrict script execution
- Enable WordPress security plugins with XSS protection features
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for BasePress version. If version is 2.17.0.1 or lower, system is vulnerable.Check Version:
wp plugin get basepress --field=versionVerify Fix Applied:
After updating, verify BasePress version shows 2.17.0.2 or higher in WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to BasePress endpoints with script tags or JavaScript payloads
- Multiple failed login attempts following BasePress page views
Network Indicators:
- Outbound connections to suspicious domains from WordPress server after BasePress page access
SIEM Query:
source="wordpress.log" AND ("basepress" OR "knowledge-base") AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")