CVE-2025-49325
📋 TL;DR
This CVE describes an open redirect vulnerability in the Newspack Newsletters WordPress plugin that allows attackers to redirect users to malicious websites. It affects all WordPress sites using Newspack Newsletters versions up to 3.13.0. Successful exploitation could enable phishing attacks against site visitors.
💻 Affected Systems
- Automattic Newspack Newsletters WordPress 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 redirect users to convincing phishing sites that steal credentials, payment information, or install malware, potentially compromising entire user accounts and organizational systems.
Likely Case
Attackers create convincing phishing links that appear legitimate due to the trusted domain, tricking users into entering sensitive information on fake login pages.
If Mitigated
With proper user awareness training and browser security controls, users might recognize suspicious redirects, limiting credential theft to less vigilant targets.
🎯 Exploit Status
Open redirect vulnerabilities are commonly exploited in phishing campaigns. The attack requires user interaction (clicking a malicious link).
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 3.13.0
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Newspack Newsletters' and check if update is available. 4. Click 'Update Now' to upgrade to version after 3.13.0. 5. Verify the update completed successfully.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the Newspack Newsletters plugin until patched
wp plugin deactivate newspack-newsletters
Web Application Firewall Rule
allAdd WAF rule to block redirects containing external domains in Newspack URLs
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to restrict redirect destinations
- Deploy web application firewall with open redirect protection rules
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Newspack Newsletters → Version. If version is 3.13.0 or earlier, you are vulnerable.Check Version:
wp plugin get newspack-newsletters --field=versionVerify Fix Applied:
After updating, verify the plugin version is higher than 3.13.0 in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual redirect patterns in web server logs, especially redirects to external domains from Newspack URLs
- Multiple failed login attempts following redirects from your domain
Network Indicators:
- HTTP 302/301 redirects from your domain to suspicious external domains
- Unusual traffic patterns to known phishing domains
SIEM Query:
source="web_server_logs" AND (url="*newspack*redirect*" OR url="*newspack*url*") AND (status=302 OR status=301) AND dest_domain!=your_domain.com