HUSTOJ Admin users can zip-slip problem_import_qduoj.php, planting PHP files in webroot for RCE

A user with administrative privileges can abuse the problemimportqduoj.php CGI script using a crafted zip file zip-slip to traverse backwards through the filesystem, then to the webroot, where they can extract a PHP file that spawns a shell to get full RCE in the context of the webserver. Module...

HUSTOJ Zip-Slip v26.01.24 - RCE

Exploit Title: HUSTOJ Zip-Slip v26.01.24 - RCE Date: 2026-02-14 Exploit Author: Marshall Whittaker / oxagast Vendor Homepage: https://github.com/zhblue/hustoj Software Link: http://123.158.38.129:8090/livecd/HUSTOJ25.05.iso LiveCD, or see above git repo Version: Before v26.01.24 Tested on: Ubuntu...

CVE-2026-24479

HUSTOF is an open source online judge based on PHP/C++/MySQL/Linux for ACM/ICPC and NOIP training. Prior to version 26.01.24, the problemimportqduoj.php and problemimporthoj.php modules fail to properly sanitize filenames within uploaded ZIP archives. Attackers can craft a malicious ZIP file...

CVE-2026-24479 HUSTOJ has Arbitrary File Write (Zip Slip) in Problem Import Modules that leads to RCE

HUSTOF is an open source online judge based on PHP/C++/MySQL/Linux for ACM/ICPC and NOIP training. Prior to version 26.01.24, the problemimportqduoj.php and problemimporthoj.php modules fail to properly sanitize filenames within uploaded ZIP archives. Attackers can craft a malicious ZIP file...

CVE-2026-24479

Summary (CVE-2026-24479): HUSTOJ (open source online judge) before version 26.01.24 is vulnerable to a Zip Slip-like flaw in the problem_import_qduoj.php and problem_import_hoj.php modules. A malicious ZIP file can contain path traversal sequences (e.g., ../../shell.php) that, when extracted on t...

CVE-2026-24479

HUSTOF is an open source online judge based on PHP/C++/MySQL/Linux for ACM/ICPC and NOIP training. Prior to version 26.01.24, the problemimportqduoj.php and problemimporthoj.php modules fail to properly sanitize filenames within uploaded ZIP archives. Attackers can craft a malicious ZIP file...

CVE-2026-24479 HUSTOJ has Arbitrary File Write (Zip Slip) in Problem Import Modules that leads to RCE

HUSTOF is an open source online judge based on PHP/C++/MySQL/Linux for ACM/ICPC and NOIP training. Prior to version 26.01.24, the problemimportqduoj.php and problemimporthoj.php modules fail to properly sanitize filenames within uploaded ZIP archives. Attackers can craft a malicious ZIP file...

CVE-2026-24479 HUSTOJ has Arbitrary File Write (Zip Slip) in Problem Import Modules that leads to RCE

HUSTOF is an open source online judge based on PHP/C++/MySQL/Linux for ACM/ICPC and NOIP training. Prior to version 26.01.24, the problemimportqduoj.php and problemimporthoj.php modules fail to properly sanitize filenames within uploaded ZIP archives. Attackers can craft a malicious ZIP file...

PT-2026-4839

Name of the Vulnerable Software and Affected Versions HUSTOF versions prior to 26.01.24 Description HUSTOF is an online judge system built on PHP, C++, MySQL, and Linux. A path traversal flaw exists in the problem import qduoj.php and problem import hoj.php modules when handling ZIP archive...