Unauthenticated file upload via unchecked share permissions
Published Apr 19, 2026 · Updated Apr 19, 2026
Improper authorization in KodCloud KodExplorer 4.0 through 4.52 allows remote attackers to upload files through a shared-folder endpoint. The fileUpload method derives a destination from the share path and upload_to input, then writes the upload after checking only filesystem writability and its extension, without checking upload authorization. No account is required, but a valid reachable share context and writable destination are required; the attacker can write permitted file types into that share.
Summary
What happened
Improper authorization in KodCloud KodExplorer 4.0 through 4.52 allows remote attackers to upload files through a shared-folder endpoint. The fileUpload method derives a destination from the share path and upload_to input, then writes the upload after checking only filesystem writability and its extension, without checking upload authorization. No account is required, but a valid reachable share context and writable destination are required; the attacker can write permitted file types into that share.
The record
- CVE
- CVE-2026-6572
- Published
- Apr 19, 2026
- Updated
- Apr 19, 2026
- Vendor
- kalcaddle
- Product
- KodExplorer
- Classifications
- CWE-285, CWE-266, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 19, 2026CVE publishedPublication date reported by the CVE source.
- Apr 19, 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.
- Affected versionversion=4.0
- Affected versionversion=4.1
- Affected versionversion=4.10
- Affected versionversion=4.11
- Affected versionversion=4.12
- Affected versionversion=4.13
- Affected versionversion=4.14
- Affected versionversion=4.15
- Affected versionversion=4.16
- Affected versionversion=4.17
- Affected versionversion=4.18
- Affected versionversion=4.19
- Affected versionversion=4.2
- Affected versionversion=4.20
- Affected versionversion=4.21
- Affected versionversion=4.22
- Affected versionversion=4.23
- Affected versionversion=4.24
- Affected versionversion=4.25
- Affected versionversion=4.26
- Affected versionversion=4.27
- Affected versionversion=4.28
- Affected versionversion=4.29
- Affected versionversion=4.3
- Affected versionversion=4.30
- Affected versionversion=4.31
- Affected versionversion=4.32
- Affected versionversion=4.33
- Affected versionversion=4.34
- Affected versionversion=4.35
- Affected versionversion=4.36
- Affected versionversion=4.37
- Affected versionversion=4.38
- Affected versionversion=4.39
- Affected versionversion=4.4
- Affected versionversion=4.40
- Affected versionversion=4.41
- Affected versionversion=4.42
- Affected versionversion=4.43
- Affected versionversion=4.44
- Affected versionversion=4.45
- Affected versionversion=4.46
- Affected versionversion=4.47
- Affected versionversion=4.48
- Affected versionversion=4.49
- Affected versionversion=4.5
- Affected versionversion=4.50
- Affected versionversion=4.51
- Affected versionversion=4.52
- Affected versionversion=4.6
- Affected versionversion=4.7
- Affected versionversion=4.8
- Affected versionversion=4.9
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
Public exploit references
- KodExplorer 4.52 Business Logic Bypass proof of conceptproof of concept · unverified
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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