CVE-2025-13999
📋 TL;DR
This CVE describes a Server-Side Request Forgery (SSRF) vulnerability in the HTML5 Audio Player WordPress plugin. Unauthenticated attackers can exploit the getIcyMetadata() function to make arbitrary web requests from the vulnerable server, potentially accessing internal services. All WordPress sites using plugin versions 2.4.0 through 2.5.1 are affected.
💻 Affected Systems
- HTML5 Audio Player – The Ultimate No-Code Podcast, MP3 & Audio Player 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 access sensitive internal services, retrieve credentials from metadata services, perform port scanning of internal networks, or pivot to attack other internal systems.
Likely Case
Information disclosure from internal services, reconnaissance of internal network structure, or limited data exfiltration from accessible internal endpoints.
If Mitigated
Limited impact if network segmentation restricts internal service access and egress filtering blocks external requests from the vulnerable server.
🎯 Exploit Status
SSRF vulnerabilities are commonly exploited and this requires no authentication, making exploitation straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.5.2
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'HTML5 Audio Player' plugin. 4. Click 'Update Now' if update is available. 5. Alternatively, download version 2.5.2 from WordPress plugin repository and manually update.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily disable the HTML5 Audio Player plugin until patched
wp plugin deactivate html5-audio-player
Network egress filtering
allRestrict outbound HTTP/HTTPS requests from web server to only necessary external services
🧯 If You Can't Patch
- Implement strict network segmentation to isolate web server from internal services
- Deploy web application firewall (WAF) rules to block SSRF patterns in requests
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → HTML5 Audio Player → Version numberCheck Version:
wp plugin get html5-audio-player --field=versionVerify Fix Applied:
Verify plugin version is 2.5.2 or higher in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual outbound HTTP requests from web server to internal IP ranges
- Requests to metadata services (169.254.169.254, 192.168.0.0/16, 10.0.0.0/8)
- Multiple failed connection attempts to various ports from web server
Network Indicators:
- Web server making unexpected HTTP requests to internal services
- Traffic from web server to cloud metadata endpoints
SIEM Query:
source="web_server_logs" AND (dest_ip IN ("169.254.169.254", "192.168.*", "10.*") OR uri CONTAINS "internal" OR uri CONTAINS "metadata")🔗 References
- https://plugins.trac.wordpress.org/changeset?old=3394789&old_path=html5-audio-player%2Ftags%2F2.5.1%2Finc%2FCore%2FAjax.php&new=3419843&new_path=html5-audio-player%2Ftags%2F2.5.2%2Finc%2FCore%2FAjax.php
- https://www.wordfence.com/threat-intel/vulnerabilities/id/989b4b9d-e22e-46a7-8ebc-5c8b33f98111?source=cve
