CVE-2025-62898
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the WordPress Links Shortcode plugin allows attackers to inject malicious scripts into web pages that persist across sessions. When exploited, it enables attackers to steal session cookies, redirect users, or perform actions on their behalf. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- WordPress Links Shortcode 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, install backdoors, or redirect visitors to malicious sites, potentially compromising the entire website and user data.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies, potentially gaining unauthorized access to user accounts and performing actions on their behalf.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before execution, preventing any successful exploitation.
🎯 Exploit Status
Exploitation requires the attacker to have the ability to create or edit content containing the vulnerable shortcode, typically requiring contributor-level access or higher.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 1.8.4 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Links Shortcode' plugin. 4. Click 'Update Now' if available. 5. Alternatively, download version 1.8.4+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily disable the Links Shortcode plugin until patched
wp plugin deactivate links-shortcode
Implement Content Security Policy
allAdd CSP headers to restrict script execution sources
Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Add to wp-config.php: header("Content-Security-Policy: default-src 'self'; script-src 'self'");
🧯 If You Can't Patch
- Remove or restrict contributor/author access to prevent content injection
- Implement web application firewall (WAF) rules to block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for Links Shortcode version. If version is 1.8.3 or lower, you are vulnerable.Check Version:
wp plugin get links-shortcode --field=versionVerify Fix Applied:
After updating, verify plugin version shows 1.8.4 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual content modifications containing script tags in posts/pages
- Multiple failed login attempts followed by successful contributor/author login
Network Indicators:
- Outbound connections to suspicious domains from your WordPress site
- Unexpected JavaScript includes in page responses
SIEM Query:
source="wordpress.log" AND ("links-shortcode" OR "shortcode") AND ("script" OR "javascript" OR "onclick" OR "onload")