CVE-2025-31767
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the Post Custom Templates Lite WordPress plugin allows attackers to inject malicious scripts into web pages. When users view pages containing the injected scripts, the attacker can steal session cookies, redirect users, or perform actions on their behalf. All WordPress sites using Post Custom Templates Lite version 1.14 or earlier are affected.
💻 Affected Systems
- Post Custom Templates Lite 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 steal administrator session cookies, take over WordPress sites, install backdoors, deface websites, or redirect visitors to malicious sites.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies, potentially compromising user accounts and performing unauthorized actions.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users.
🎯 Exploit Status
Stored XSS vulnerabilities in WordPress plugins are commonly exploited. While no public PoC is confirmed, similar vulnerabilities are frequently weaponized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.15 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Post Custom Templates Lite'. 4. Click 'Update Now' if available. 5. Alternatively, download version 1.15+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched.
wp plugin deactivate post-custom-templates-lite
Apply WAF Rules
allConfigure web application firewall to block XSS payloads targeting this plugin.
🧯 If You Can't Patch
- Remove the Post Custom Templates Lite plugin entirely and use alternative template solutions.
- Implement strict Content Security Policy (CSP) headers to mitigate XSS impact.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for 'Post Custom Templates Lite' version 1.14 or earlier.Check Version:
wp plugin get post-custom-templates-lite --field=versionVerify Fix Applied:
Verify plugin version shows 1.15 or later in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints containing script tags or JavaScript payloads
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests containing suspicious script injections in POST parameters
- Unexpected outbound connections from user browsers after visiting affected pages
SIEM Query:
source="web_server" AND ("post-custom-templates" OR "pctl") AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")