PHP
CVE-2026-24479
CRITICAL
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
Lifecycle Timeline
3DescriptionGitHub Advisory
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 problem_import_qduoj.php and problem_import_hoj.php modules fail to properly sanitize filenames within uploaded ZIP archives. Attackers can craft a malicious ZIP file containing files with path traversal sequences (e.g., ../../shell.php). When extracted by the server, this allows writing files to arbitrary locations in the web root, leading to Remote Code Execution (RCE). Version 26.01.24 contains a fix for the issue.
AnalysisAI
HUSTOJ online judge has a path traversal vulnerability enabling arbitrary file access on the competition server.
Technical ContextAI
HUSTOJ has a CWE-22 path traversal. Second HUSTOJ vulnerability (after CSV injection in CVE-2026-23873).
RemediationAI
Update HUSTOJ.
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Same weakness CWE-22 – Path Traversal
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External POC / Exploit Code
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