CVE-2026-24479Public exploitNetwork attack vector

Authenticated code execution via ZIP entry traversal

Published Jan 27, 2026 · Updated Jan 27, 2026

Path traversal in HUSTOJ before 26.01.24 allows remote authenticated users to execute code by importing a crafted ZIP archive. The import modules concatenate each untrusted ZIP entry name with an extraction path and pass the resulting pathname to file_put_contents without removing parent-directory elements. Administrative access to either import page is required; a planted PHP file executes with the web server account's permissions.

CVSS severity9.3
Critical
EPSS probability8.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in HUSTOJ before 26.01.24 allows remote authenticated users to execute code by importing a crafted ZIP archive. The import modules concatenate each untrusted ZIP entry name with an extraction path and pass the resulting pathname to file_put_contents without removing parent-directory elements. Administrative access to either import page is required; a planted PHP file executes with the web server account's permissions.

The record

CVE
CVE-2026-24479
Published
Jan 27, 2026
Updated
Jan 27, 2026
Vendor
zhblue
Product
HUSTOJ
Classifications
CWE-22, T1190, T1505.003
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 26.01.24

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

zhblue · HUSTOJversion=< 26.01.24

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application
T1505.003Web Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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