CVE-2026-4830Public exploitNetwork attack vector

Unauthenticated file upload via unchecked share path

Published Mar 26, 2026 · Updated Mar 26, 2026

Unrestricted file upload in KodCloud KodBox 1.64 allows remote attackers to write files through a crafted public-share request. The Add method in app/controller/explorer/userShare.class.php accepts a caller-controlled path and creates a share without checking access to physical-path targets. No authentication or user interaction is required, but exploitation has high complexity and can affect stored-data confidentiality, integrity, and availability.

CVSS severity5.6
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in KodCloud KodBox 1.64 allows remote attackers to write files through a crafted public-share request. The Add method in app/controller/explorer/userShare.class.php accepts a caller-controlled path and creates a share without checking access to physical-path targets. No authentication or user interaction is required, but exploitation has high complexity and can affect stored-data confidentiality, integrity, and availability.

The record

CVE
CVE-2026-4830
Published
Mar 26, 2026
Updated
Mar 26, 2026
Vendor
kalcaddle
Product
KodBox
Classifications
CWE-284, CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 26, 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=1.64

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

kalcaddle · KodBoxversion=1.64

Published CVSS scores

2.9VulDBCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
5.1VulDBAV:N/AC:H/Au:N/C:P/I:P/A:P
5.6VulDBCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

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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