CVE-2025-62983
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the WordPress Posts By Tag plugin allows attackers to inject malicious scripts into web pages that are then executed when other users view those pages. All WordPress sites using Posts By Tag plugin versions up to and including 3.2.1 are affected. The vulnerability requires contributor-level access or higher to exploit.
💻 Affected Systems
- WordPress Posts By Tag 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 with contributor access could inject malicious scripts that steal administrator credentials, redirect users to malicious sites, or perform actions on behalf of authenticated users, potentially leading to complete site compromise.
Likely Case
Attackers with contributor access inject malicious scripts that steal session cookies or display phishing content to users, potentially compromising user accounts and data.
If Mitigated
With proper input validation and output encoding, malicious scripts are neutralized before reaching users, preventing any exploitation.
🎯 Exploit Status
Exploitation requires contributor-level access or higher. The vulnerability is stored XSS, meaning malicious payloads persist in the database and affect all users viewing the compromised content.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 3.2.2 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Posts By Tag' plugin. 4. Click 'Update Now' if update is available. 5. Alternatively, download version 3.2.2+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable Posts By Tag plugin
WordPressTemporarily disable the vulnerable plugin until patched
wp plugin deactivate posts-by-tag
Restrict user roles
WordPressLimit contributor and author roles to trusted users only
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Use web application firewall (WAF) rules to block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins → Posts By Tag version. If version is 3.2.1 or lower, you are vulnerable.Check Version:
wp plugin list --name=posts-by-tag --field=versionVerify Fix Applied:
After updating, verify Posts By Tag plugin shows version 3.2.2 or higher in WordPress admin plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to tag-related endpoints
- Suspicious script tags in post/tag content
- Multiple failed login attempts followed by successful contributor login
Network Indicators:
- Outbound connections to suspicious domains from WordPress site
- Unexpected JavaScript execution in tag display pages
SIEM Query:
source="wordpress.log" AND ("posts-by-tag" OR "tag injection" OR "script tag")