CVE-2025-66421
📋 TL;DR
This Cross-Site Scripting (XSS) vulnerability in Tryton sao allows attackers to inject malicious scripts into web pages viewed by other users. It affects Tryton sao installations where completion values aren't properly escaped, potentially compromising user sessions and data. All users of affected Tryton sao versions are vulnerable until patched.
💻 Affected Systems
- Tryton sao (tryton-sao)
⚠️ 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 session cookies, perform actions as authenticated users, redirect to malicious sites, or deface the application interface.
Likely Case
Session hijacking leading to unauthorized access to user accounts and potential data theft.
If Mitigated
Limited impact with proper input validation and output encoding controls in place.
🎯 Exploit Status
XSS exploitation typically requires user interaction or social engineering to trigger.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.6.11, 7.4.21, 7.0.40, or 6.0.69 depending on your version line
Vendor Advisory: https://discuss.tryton.org/t/security-release-for-issue-14363/8951
Restart Required: Yes
Instructions:
1. Identify your current Tryton sao version. 2. Upgrade to the appropriate patched version: 7.6.11 for 7.6.x, 7.4.21 for 7.4.x, 7.0.40 for 7.0.x, or 6.0.69 for 6.0.x. 3. Restart the Tryton application server. 4. Verify the fix by testing completion functionality.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side validation to sanitize completion values before processing.
# Custom validation logic required based on application
Content Security Policy
allImplement CSP headers to restrict script execution sources.
# Add to web server config: Content-Security-Policy: script-src 'self'
🧯 If You Can't Patch
- Disable completion functionality if not essential for business operations
- Implement web application firewall rules to block XSS payload patterns
🔍 How to Verify
Check if Vulnerable:
Check your Tryton sao version against affected versions. Test completion fields for proper HTML escaping.Check Version:
Check Tryton server logs or configuration files for version informationVerify Fix Applied:
After patching, test completion functionality and verify that HTML tags in completion values are displayed as text, not executed.📡 Detection & Monitoring
Log Indicators:
- Unusual completion requests with script tags
- Multiple failed completion attempts with special characters
Network Indicators:
- HTTP requests containing script tags in completion parameters
- Unexpected redirects from completion endpoints
SIEM Query:
web.url:*completion* AND (web.param:*<script* OR web.param:*javascript:* OR web.param:*onerror=*)