CVE-2025-58683
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the WordPress Last Updated Shortcode plugin allows attackers to inject malicious scripts into web pages. When exploited, these scripts execute in visitors' browsers, potentially stealing session cookies or redirecting users to malicious sites. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- WordPress Last Updated 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 session cookies, take over WordPress sites, deface websites, or redirect visitors to malware distribution sites.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies or credentials, potentially compromising user accounts with lower privileges.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users' browsers.
🎯 Exploit Status
Requires attacker to have contributor-level access or higher to inject malicious content.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.0.2 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Last Updated Shortcode' and click 'Update Now'. 4. Alternatively, download latest version from WordPress repository and replace plugin files.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily deactivate the Last Updated Shortcode plugin until patched
wp plugin deactivate last-updated-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 the plugin entirely from your WordPress installation
- Implement web application firewall (WAF) rules to block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for 'Last Updated Shortcode' version 1.0.1 or earlierCheck Version:
wp plugin get last-updated-shortcode --field=versionVerify Fix Applied:
Verify plugin version shows 1.0.2 or later in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to wp-admin containing script tags
- Multiple failed authentication attempts followed by successful contributor/admin login
Network Indicators:
- Outbound connections to suspicious domains from your WordPress server
- Unexpected JavaScript payloads in HTTP responses
SIEM Query:
source="wordpress.log" AND ("script" OR "javascript" OR "onload" OR "onerror") AND "last-updated-shortcode"