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...

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...