CVE-2025-12457
📋 TL;DR
This vulnerability allows authenticated WordPress users with Author-level permissions or higher to upload malicious SVG files containing JavaScript. When other users view these SVG files, the embedded scripts execute in their browsers, enabling session hijacking, defacement, or malware distribution. All WordPress sites using the Enable SVG, WebP, and ICO Upload plugin version 1.1.2 or earlier are affected.
💻 Affected Systems
- Enable SVG, WebP, and ICO Upload 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 steal administrator sessions, install backdoors, redirect users to malicious sites, or completely compromise the WordPress site.
Likely Case
Attackers inject malicious scripts to steal user cookies/sessions, deface pages, or redirect users to phishing sites.
If Mitigated
With proper user access controls and content security policies, impact is limited to potential defacement of SVG content display areas.
🎯 Exploit Status
Exploitation requires authenticated access but is trivial once attacker has Author credentials. SVG files with embedded JavaScript can be uploaded directly.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.1.3 or later
Vendor Advisory: https://plugins.trac.wordpress.org/browser/enable-svg-webp-ico-upload
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Enable SVG, WebP, and ICO Upload'. 4. Click 'Update Now' if available, or download version 1.1.3+ from WordPress repository. 5. Replace plugin files if manual update required.
🔧 Temporary Workarounds
Disable SVG uploads via .htaccess
linuxPrevent SVG file uploads at web server level
Add to .htaccess: <FilesMatch "\.svg$">
Order Allow,Deny
Deny from all
</FilesMatch>
Remove plugin temporarily
allDisable vulnerable plugin until patched
wp plugin deactivate enable-svg-webp-ico-upload
🧯 If You Can't Patch
- Restrict user roles: Remove Author permissions from untrusted users and implement least privilege access.
- Implement Content Security Policy: Add CSP headers to restrict script execution from SVG sources.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for 'Enable SVG, WebP, and ICO Upload' version 1.1.2 or lower.Check Version:
wp plugin get enable-svg-webp-ico-upload --field=versionVerify Fix Applied:
Verify plugin version shows 1.1.3 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual SVG file uploads from Author-level users
- Multiple failed upload attempts with modified SVG content
Network Indicators:
- HTTP POST requests to /wp-admin/async-upload.php with SVG files
- SVG files containing script tags in uploads directory
SIEM Query:
source="wordpress" AND (url="/wp-admin/async-upload.php" OR file_extension="svg") AND user_role="author"