CVE-2026-1810
📋 TL;DR
This CVE describes a path traversal vulnerability in bolo-blog's bolo-solo software up to version 2.6.4. Attackers can exploit the unpackFilteredZip function in the ZIP file handler to write files outside intended directories via manipulated ZIP archives. This affects all users running vulnerable versions of bolo-solo.
💻 Affected Systems
- bolo-blog bolo-solo
📦 What is this software?
Bolo Solo by Adlered
⚠️ Risk & Real-World Impact
Worst Case
Remote attackers could overwrite critical system files, potentially leading to complete system compromise, data destruction, or installation of persistent backdoors.
Likely Case
Attackers could write malicious files to web-accessible directories, enabling web shell deployment, data exfiltration, or privilege escalation.
If Mitigated
With proper file permissions and input validation, exploitation would be limited to writing files only within the application's sandboxed directories.
🎯 Exploit Status
Exploit details are publicly available in the GitHub issue. Remote exploitation is confirmed possible.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
No official patch exists. Monitor the GitHub repository for updates. Consider applying community fixes or migrating to alternative software.
🔧 Temporary Workarounds
Disable ZIP upload functionality
allTemporarily disable backup/restore features that process ZIP files
Modify application configuration to disable BackupService functionality
Implement input validation proxy
allAdd a reverse proxy or WAF to validate and sanitize ZIP file uploads
Configure WAF rules to detect path traversal patterns in file uploads
🧯 If You Can't Patch
- Implement strict file system permissions to limit write access to application directories only
- Deploy network segmentation to isolate bolo-solo instances from critical systems
🔍 How to Verify
Check if Vulnerable:
Check if running bolo-solo version 2.6.4 or earlier. Review application logs for suspicious ZIP file processing.Check Version:
Check application version in admin panel or examine pom.xml for version informationVerify Fix Applied:
Test with a crafted ZIP file containing path traversal sequences to verify proper validation.📡 Detection & Monitoring
Log Indicators:
- Unusual ZIP file processing errors
- File write operations outside expected directories
- Multiple failed backup/restore attempts
Network Indicators:
- Unusual uploads to backup/restore endpoints
- Large ZIP files being processed
SIEM Query:
source="bolo-solo" AND (event="ZIP_PROCESSING" OR event="FILE_WRITE") AND path=".."