CVE-2025-66420
📋 TL;DR
This vulnerability allows cross-site scripting (XSS) attacks through HTML attachments in Tryton's web client (sao). Attackers can inject malicious scripts that execute in users' browsers when viewing attachments. All Tryton users with web access to affected versions are potentially impacted.
💻 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, or redirect users to malicious sites, potentially leading to account compromise or data theft.
Likely Case
Attackers could perform limited session hijacking or credential theft from users who open malicious HTML attachments.
If Mitigated
With proper content security policies and attachment filtering, impact is limited to isolated user sessions without broader system compromise.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious HTML attachment) and typically authenticated access to upload attachments.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.6.9, 7.4.19, 7.0.38, or 6.0.67 depending on your branch
Vendor Advisory: https://discuss.tryton.org/t/security-release-for-issue-14290/8895
Restart Required: Yes
Instructions:
1. Identify your Tryton version. 2. Upgrade to the patched version for your branch. 3. Restart Tryton services. 4. Verify the update was successful.
🔧 Temporary Workarounds
Disable HTML attachments
allConfigure Tryton to block or sanitize HTML file uploads
Implement Content Security Policy
allAdd CSP headers to prevent script execution from untrusted sources
🧯 If You Can't Patch
- Implement strict file upload filtering to block HTML attachments
- Educate users about risks of opening untrusted attachments
🔍 How to Verify
Check if Vulnerable:
Check Tryton version against affected versions listCheck Version:
Check Tryton configuration files or admin interface for version informationVerify Fix Applied:
Confirm version is 7.6.9, 7.4.19, 7.0.38, or 6.0.67 or later📡 Detection & Monitoring
Log Indicators:
- Unusual HTML file uploads
- Multiple failed attachment upload attempts
Network Indicators:
- Suspicious file uploads to attachment endpoints
SIEM Query:
source="tryton" AND (event="file_upload" AND file_extension="html")