CVE-2026-22867
📋 TL;DR
LaSuite Doc versions 3.8.0 to 4.3.0 contain a stored XSS vulnerability in the Interlinking feature. Attackers with document editing privileges can inject malicious javascript: URLs that execute arbitrary code when other users click on the links. This affects all users of vulnerable LaSuite Doc instances.
💻 Affected Systems
- LaSuite Doc
⚠️ 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 account takeover, redirect users to malicious sites, or execute arbitrary actions as authenticated users.
Likely Case
Attackers with document editing access could steal credentials or session tokens from users who click malicious links.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before execution.
🎯 Exploit Status
Exploitation requires document editing privileges. Attack is simple once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.4.0
Vendor Advisory: https://github.com/suitenumerique/docs/security/advisories/GHSA-4rwv-ghwh-9rv6
Restart Required: Yes
Instructions:
1. Backup your LaSuite Doc instance. 2. Download version 4.4.0 from official releases. 3. Follow upgrade instructions in documentation. 4. Restart the application service.
🔧 Temporary Workarounds
Disable Interlinking Feature
allTemporarily disable the Interlinking feature to prevent exploitation
Edit configuration to disable interlinking feature
Implement WAF Rules
allAdd WAF rules to block javascript: URLs in document links
Add WAF rule to block patterns containing 'javascript:' in URL parameters
🧯 If You Can't Patch
- Restrict document editing privileges to trusted users only
- Implement Content Security Policy (CSP) headers to restrict script execution
🔍 How to Verify
Check if Vulnerable:
Check LaSuite Doc version in admin panel or configuration files. If version is between 3.8.0 and 4.3.0 inclusive, system is vulnerable.Check Version:
Check admin panel or configuration files for version numberVerify Fix Applied:
After patching, verify version shows 4.4.0 or higher. Test by attempting to create a javascript: link in Interlinking feature - it should be blocked or sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual document editing activity
- Multiple failed link creation attempts
- javascript: URLs in document edit logs
Network Indicators:
- Outbound connections to unexpected domains after link clicks
- Suspicious JavaScript execution patterns
SIEM Query:
search 'javascript:' in document edit logs OR search for suspicious outbound connections after link interactions