CVE-2026-2549
đ TL;DR
This vulnerability in zhanghuanhao LibrarySystem allows attackers to bypass access controls in the BookController.java component, potentially enabling unauthorized access to sensitive library management functions. The vulnerability affects all versions up to 1.1.1 and can be exploited remotely without authentication.
đģ Affected Systems
- zhanghuanhao LibrarySystem (åžäšĻéĻįŽĄįįŗģįģ)
â ī¸ 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).
đ 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
â ī¸ Risk & Real-World Impact
Worst Case
Complete compromise of the library management system allowing unauthorized data access, modification, or deletion of book records, user information, and system configuration.
Likely Case
Unauthorized access to book management functions, potentially allowing viewing or modification of library catalog data.
If Mitigated
Limited impact with proper network segmentation and access controls in place, potentially only affecting isolated library management functions.
đ¯ Exploit Status
Exploit details are publicly disclosed in GitHub issues. The vulnerability requires no authentication and has straightforward exploitation paths.
đ ī¸ Fix & Mitigation
â Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
No official patch available. Consider alternative library management systems or implement workarounds. Monitor the GitHub repository for updates.
đ§ Temporary Workarounds
Network Access Restriction
linuxRestrict network access to the LibrarySystem application to trusted IP addresses only
iptables -A INPUT -p tcp --dport [APPLICATION_PORT] -s [TRUSTED_IP] -j ACCEPT
iptables -A INPUT -p tcp --dport [APPLICATION_PORT] -j DROP
Application Firewall Rules
allImplement web application firewall rules to block suspicious access patterns to BookController endpoints
Modify WAF configuration to restrict access to /book/* endpoints
đ§¯ If You Can't Patch
- Isolate the LibrarySystem on a separate network segment with strict access controls
- Implement additional authentication layer (reverse proxy with authentication) in front of the application
đ How to Verify
Check if Vulnerable:
Check the application version in the web interface or configuration files. If version is 1.1.1 or earlier, the system is vulnerable.Check Version:
Check application.properties or web interface for version informationVerify Fix Applied:
No official fix available. Verify workarounds by testing access controls from unauthorized sources.đĄ Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to BookController endpoints
- Unusual book management activities from unexpected IP addresses
Network Indicators:
- Unusual traffic patterns to /book/* endpoints
- Access from unauthorized IP addresses to library management functions
SIEM Query:
source="librarysystem.log" AND (uri="/book/*" OR uri="/BookController") AND (user="anonymous" OR auth_status="failed")