CVE-2025-31797
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the BoldGrid Sprout Clients WordPress plugin allows attackers to inject malicious scripts into web pages. When exploited, these scripts execute in victims' browsers, potentially stealing session cookies or performing actions on their behalf. WordPress sites using vulnerable versions of the Sprout Clients plugin are affected.
💻 Affected Systems
- BoldGrid Sprout Clients 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 session cookies, take over WordPress sites, deface websites, or redirect visitors to malicious sites.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies or credentials, potentially compromising user accounts.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before execution.
🎯 Exploit Status
Stored XSS typically requires some level of access to input fields, but complexity is low once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 3.2
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Sprout Clients' and check for updates. 4. If update available, click 'Update Now'. 5. Alternatively, download latest version from WordPress plugin repository.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the Sprout Clients plugin until patched
wp plugin deactivate sprout-clients
Implement Content Security Policy
allAdd CSP headers to restrict script execution sources
Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Add to nginx config: add_header Content-Security-Policy "default-src 'self'; script-src 'self'";
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads
- Restrict plugin access to trusted users only through WordPress role management
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Sprout Clients for version numberCheck Version:
wp plugin get sprout-clients --field=versionVerify Fix Applied:
Verify plugin version is greater than 3.2 in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints
- JavaScript payloads in request parameters
- Multiple failed injection attempts
Network Indicators:
- Suspicious script tags in HTTP requests to WordPress admin areas
- Unexpected redirects from plugin pages
SIEM Query:
source="wordpress.log" AND ("sprout-clients" OR "sprout_clients") AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")