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CVE-2026-24479

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

Published: Jan 27, 2026Updated: Mar 2, 2026 Sources: CVE List NVD
NVD MITRE
9.8CVSS
CRITICAL

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.

EPSS Score
58.9%
Top 1.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High

Weaknesses

CWE-22

Affected Products

hustoj
hustoj
hustoj
zhblue

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

https://github.com/zhblue/hustoj/commit/902bd09e6d0011fe89cd84d4236899314b33101f
github.com
https://github.com/zhblue/hustoj/security/advisories/GHSA-xmgg-2rw4-7fxj
github.com

Timeline

Published
Jan 27, 2026
Last Updated
Mar 2, 2026
News mentions
1

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