Authenticated arbitrary file write via manifest traversal
Published May 7, 2026 · Updated May 7, 2026
Path traversal in Junsen Huang xiaozhi-mcphub 1.0.0 through 1.0.3 allows remote authenticated users to write files via DXT uploads. The upload handler reads manifest.name from an archive, joins it into finalExtractDir without containment validation, and moves the extracted directory there. Exploitation requires DXT upload access and server write permission at the resolved path; resulting files can overwrite application data or disrupt the service.
Summary
What happened
Path traversal in Junsen Huang xiaozhi-mcphub 1.0.0 through 1.0.3 allows remote authenticated users to write files via DXT uploads. The upload handler reads manifest.name from an archive, joins it into finalExtractDir without containment validation, and moves the extracted directory there. Exploitation requires DXT upload access and server write permission at the resolved path; resulting files can overwrite application data or disrupt the service.
The record
- CVE
- CVE-2026-8116
- Published
- May 7, 2026
- Updated
- May 7, 2026
- Vendor
- Junsen Huang
- Product
- xiaozhi-mcphub
- Classifications
- CWE-22
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- May 7, 2026CVE publishedPublication date reported by the CVE source.
- May 7, 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=1.0.0
- Affected versionversion=1.0.1
- Affected versionversion=1.0.2
- Affected versionversion=1.0.3
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
- GitHub issue reproduction archive and requestproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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