CVE-2025-59590

5.9 MEDIUM

📋 TL;DR

This stored cross-site scripting (XSS) vulnerability in the Media Library Assistant WordPress plugin allows attackers to inject malicious scripts into web pages. When users view affected pages, the scripts execute in their browsers, potentially stealing credentials or performing unauthorized actions. All WordPress sites using Media Library Assistant versions up to 3.28 are affected.

💻 Affected Systems

Products:
  • Media Library Assistant WordPress Plugin
Versions: All versions up to and including 3.28
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Requires WordPress installation with Media Library Assistant plugin enabled. Vulnerability exists in default configuration.

⚠️ 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.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. 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 malicious sites.

🟠

Likely Case

Attackers inject malicious JavaScript to steal user session cookies or credentials, potentially gaining administrative access to the WordPress site.

🟢

If Mitigated

With proper input validation and output encoding, malicious scripts would be neutralized before reaching users' browsers.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Requires attacker to have some level of access to inject malicious payload. Stored XSS means payload persists and affects multiple users.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Version 3.29 or later

Vendor Advisory: https://patchstack.com/database/wordpress/plugin/media-library-assistant/vulnerability/wordpress-media-library-assistant-plugin-3-28-cross-site-scripting-xss-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Media Library Assistant. 4. Click 'Update Now' if update available. 5. If no update available, download version 3.29+ from WordPress repository and manually update.

🔧 Temporary Workarounds

Disable Plugin

WordPress

Temporarily disable Media Library Assistant plugin until patched

wp plugin deactivate media-library-assistant

Content Security Policy

all

Implement strict CSP headers to mitigate XSS impact

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'");

🧯 If You Can't Patch

  • Implement web application firewall (WAF) with XSS protection rules
  • Restrict plugin access to trusted users only using role-based access controls

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin → Plugins → Media Library Assistant → Version. If version is 3.28 or lower, you are vulnerable.

Check Version:

wp plugin get media-library-assistant --field=version

Verify Fix Applied:

After updating, verify version is 3.29 or higher in WordPress plugins page.

📡 Detection & Monitoring

Log Indicators:

  • Unusual POST requests to Media Library Assistant endpoints
  • JavaScript payloads in plugin-related logs
  • Multiple failed authentication attempts followed by plugin access

Network Indicators:

  • Malicious script tags in HTTP responses from Media Library Assistant pages
  • Unexpected outbound connections from WordPress site after viewing media pages

SIEM Query:

source="wordpress.log" AND ("media-library-assistant" OR "mla") AND ("script" OR "javascript" OR "onload" OR "onerror")

🔗 References

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