CVE•Published 2026-01-27•1 article on news•7 live references•NVD data

CVE-2026-24479

Vulnerability data via CVEDB (Shodan)

CVSS v3.1

9.3

CRITICAL

EPSS percentile

Exploit Prediction Scoring System · top 6% of all CVEs

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.

Timeline

Published 2026-01-27

External references

NVD MITRE Exploit-DB GitHub PoC Sploitus trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-24479

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product + version

product:"Hustoj Hustoj" version:"15.12"

Version-pinned fingerprint from NVD's first vulnerable CPE.

Shodan · banner/body mention

http.html:"Hustoj"

HTTP body or banner mentions "Hustoj" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-24479