CVE-2023-6850Network attack vector

Authenticated file upload via absent API-key bypass

Published Dec 16, 2023 · Updated Oct 7, 2024

Unrestricted file upload in kalcaddle KodExplorer 4.51.03 allows remote authenticated users to write files through the yzOffice API. The API access-token check returns without rejecting the request when its configuration or API key is absent, leaving path and file inputs unguarded. A low-privileged network user can place attacker-selected content through the getFile route, affecting stored-file integrity and service availability.

CVSS severity6.3
Medium
EPSS probability0.84%
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 kalcaddle KodExplorer 4.51.03 allows remote authenticated users to write files through the yzOffice API. The API access-token check returns without rejecting the request when its configuration or API key is absent, leaving path and file inputs unguarded. A low-privileged network user can place attacker-selected content through the getFile route, affecting stored-file integrity and service availability.

The record

CVE
CVE-2023-6850
Published
Dec 16, 2023
Updated
Oct 7, 2024
Vendor
kalcaddle
Product
KodExplorer
Classifications
CWE-434, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 7, 2024Record 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=4.51.03

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

kalcaddle · KodExplorerversion=4.51.03

Published CVSS scores

6.5VulDB CNAAV:N/AC:L/Au:S/C:P/I:P/A:P
6.3VulDB CNACVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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