CVE-2026-24479

CRITICAL

9.8

Description

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/27/2026

Last Modified3/2/2026

Sourcenvd

Honeypot Sightings0

Affected Products

hustoj:hustoj

Weaknesses (CWE)

CWE-22

References

https://github.com/zhblue/hustoj/commit/902bd09e6d0011fe89cd84d4236899314b33101f(security-advisories@github.com)

https://github.com/zhblue/hustoj/security/advisories/GHSA-xmgg-2rw4-7fxj(security-advisories@github.com)

IOC Correlations

No correlations recorded

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