CVE-2026-24815
📋 TL;DR
This vulnerability allows attackers to upload malicious files and execute arbitrary code through deserialization attacks in the TIS platform. It affects all users running TIS versions before 4.3.0, particularly those with file upload functionality enabled.
💻 Affected Systems
- datavane TIS (tis-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
Remote code execution leading to complete system compromise, data theft, and lateral movement within the network.
Likely Case
File upload leading to web shell deployment and limited server compromise.
If Mitigated
Unauthorized file uploads blocked, but potential for other attack vectors remains.
🎯 Exploit Status
Combination of unrestricted file upload and deserialization vulnerabilities increases attack surface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.3.0
Vendor Advisory: https://github.com/datavane/tis/pull/443
Restart Required: Yes
Instructions:
1. Backup current configuration and data. 2. Download TIS version 4.3.0 or later from official repository. 3. Replace existing installation with patched version. 4. Restart TIS services.
🔧 Temporary Workarounds
File Upload Restriction
allImplement strict file type validation and size limits on upload endpoints
Configure web server to reject uploads of executable file types (.jar, .class, .xml with dangerous content)
Network Segmentation
allIsolate TIS instances from critical systems
Implement firewall rules to restrict TIS network access
🧯 If You Can't Patch
- Implement strict input validation and sanitization for all file uploads
- Disable or restrict file upload functionality entirely if not required
🔍 How to Verify
Check if Vulnerable:
Check TIS version; if below 4.3.0, system is vulnerableCheck Version:
Check TIS configuration files or admin interface for version informationVerify Fix Applied:
Confirm version is 4.3.0 or higher and test file upload functionality with malicious payloads📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads, particularly executable files or XML with serialized objects
- Errors in XmlFile.java processing
- Unexpected process execution
Network Indicators:
- HTTP POST requests to file upload endpoints with suspicious content
- Outbound connections from TIS to unknown destinations
SIEM Query:
source="tis.log" AND ("upload" OR "XmlFile") AND ("error" OR "exception")