CVE-2025-14375

6.1 MEDIUM

📋 TL;DR

This reflected XSS vulnerability in the RSS Aggregator WordPress plugin allows unauthenticated attackers to inject malicious JavaScript via the 'className' parameter. Attackers can trick users into clicking specially crafted links to execute arbitrary scripts in their browser context. All WordPress sites using this plugin up to version 5.0.10 are affected.

💻 Affected Systems

Products:
  • RSS Aggregator – RSS Import, News Feeds, Feed to Post, and Autoblogging plugin for WordPress
Versions: All versions up to and including 5.0.10
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: All WordPress installations with vulnerable plugin versions are affected regardless of 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 admin session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users if they can trick an admin into clicking a malicious link.

🟠

Likely Case

Attackers create phishing links that execute JavaScript in victims' browsers, potentially stealing session cookies or performing limited actions based on the victim's permissions.

🟢

If Mitigated

With proper web application firewalls and user awareness training, successful exploitation would be limited to isolated incidents with minimal impact.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Reflected XSS vulnerabilities are commonly weaponized in phishing campaigns and require minimal technical skill to exploit.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 5.0.11 or later

Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3439384/wp-rss-aggregator

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'RSS Aggregator' and click 'Update Now'. 4. Verify plugin version is 5.0.11 or higher.

🔧 Temporary Workarounds

Web Application Firewall Rule

all

Block requests containing malicious JavaScript patterns in the className parameter

Disable Plugin

linux

Temporarily disable the RSS Aggregator plugin until patched

wp plugin deactivate wp-rss-aggregator

🧯 If You Can't Patch

  • Implement Content Security Policy (CSP) headers to restrict script execution
  • Use web application firewall to block XSS payloads in URL parameters

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → Installed Plugins for RSS Aggregator version

Check Version:

wp plugin get wp-rss-aggregator --field=version

Verify Fix Applied:

Verify plugin version is 5.0.11 or higher in WordPress admin panel

📡 Detection & Monitoring

Log Indicators:

  • HTTP requests with suspicious JavaScript patterns in className parameter
  • Multiple 400/403 errors from WAF blocking attempts

Network Indicators:

  • Unusual outbound connections after visiting plugin pages
  • Suspicious referrer headers containing script tags

SIEM Query:

source="web_server" AND ("className" AND ("script" OR "javascript:" OR "onerror=" OR "onload="))

🔗 References

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