CVE-2025-12535
📋 TL;DR
The SureForms WordPress plugin has a CSRF bypass vulnerability that allows unauthenticated attackers to perform unauthorized actions via WordPress REST API endpoints. This affects all WordPress sites using SureForms versions up to 1.13.1. Attackers can trigger plugin hooks and potentially affect other plugins that rely solely on REST nonce verification.
💻 Affected Systems
- WordPress SureForms 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 execute arbitrary actions via vulnerable REST endpoints, potentially compromising site functionality, modifying data, or affecting other plugins that use the same nonce verification mechanism.
Likely Case
Unauthorized form submissions, data manipulation through the SureForms plugin, and potential abuse of other plugins' REST endpoints that don't have additional authentication checks.
If Mitigated
Limited impact if other security controls like proper authentication, rate limiting, or additional validation are in place for REST endpoints.
🎯 Exploit Status
Exploitation requires crafting malicious requests to WordPress REST endpoints using the improperly distributed nonces. No authentication needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.13.2 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find SureForms plugin. 4. Click 'Update Now' if update available. 5. Alternatively, download version 1.13.2+ from WordPress plugin repository and manually update.
🔧 Temporary Workarounds
Disable SureForms Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate sureforms
Restrict REST API Access
allLimit REST API access to authenticated users only
Add to wp-config.php: define('REST_API_AUTH_REQUIRED', true);
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block suspicious REST API requests
- Monitor and audit all REST API endpoint usage for unusual patterns
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for SureForms version. If version is 1.13.1 or lower, you are vulnerable.Check Version:
wp plugin get sureforms --field=versionVerify Fix Applied:
Verify SureForms plugin version is 1.13.2 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual REST API requests from unauthenticated users
- Multiple failed nonce validations
- Suspicious activity in SureForms-related endpoints
Network Indicators:
- Unusual POST requests to /wp-json/ endpoints without authentication headers
- Requests containing 'wp_ajax_nopriv_rest-nonce' parameter
SIEM Query:
source="wordpress.log" AND ("rest-nonce" OR "sureforms" OR "wp_ajax_nopriv") AND status=200 AND user="unauthenticated"🔗 References
- https://plugins.trac.wordpress.org/browser/sureforms/tags/1.13.1/inc/admin-ajax.php#L45
- https://plugins.trac.wordpress.org/browser/sureforms/tags/1.13.1/inc/background-process.php#L74
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3391762%40sureforms%2Ftrunk&old=3382423%40sureforms%2Ftrunk&sfp_email=&sfph_mail=
- https://www.wordfence.com/threat-intel/vulnerabilities/id/b083cf9d-bcfe-4234-a816-2d216da28b57?source=cve
