VulnerabilityAnalyzed

CVE-2026-24479

Attackers can craft a malicious ZIP file containing files with path traversal sequences (e.g., ../../shell.php).

CRITICAL 9.3EPSS 8.03%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (8.03%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 4.0: 9.3 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 8.03% probability · 94th percentile
CISA KEV: Not listed
Weakness: CWE-22
Affected: hustoj/hustoj
Source: security-advisories@github.com

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.