CVE-2026-100520
Received Received - Intake

Path Traversal in Laranode via File Upload

Publication date: 2026-09-26

Last updated on: 2026-09-26

Assigner: VulnCheck

Description
Laranode versions before 1.2.1 contain a path traversal vulnerability in the POST /filemanager/upload-file endpoint that allows authenticated users to write arbitrary files outside their home directory. Attackers can supply directory traversal sequences in the path parameter to write PHP files into other tenants' web roots and execute code as those tenants.

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Meta Information

Published
2026-09-26
Last Modified
2026-09-26
Generated
2026-09-26
AI Q&A
2026-09-26
EPSS Evaluated
N/A
NVD
CVE-2026-100520
EUVD
EUVD-2026-87375

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
crivion laranode to 1.2.1 (exc)
crivion laranode 1.2.1

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-22 The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

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Executive Summary

CVE-2026-100520 is a path traversal vulnerability in Laranode versions before 1.2.1. It affects the POST /filemanager/upload-file endpoint, allowing authenticated users to write arbitrary files outside their home directory by using directory traversal sequences in the path parameter. Attackers can upload PHP files into other tenants' web roots and execute code as those tenants.

Detection Guidance

Check Laranode version with: curl -s https://your-laranode-instance.com | grep -i version. If version is before 1.2.1, the system is vulnerable. Inspect file upload logs for suspicious paths containing '../' or similar traversal sequences.

Impact Analysis

This vulnerability allows attackers to upload malicious files like PHP scripts into other tenants' directories. This could lead to code execution as those tenants, privilege escalation, data leakage, or unauthorized access to sensitive files. The impact includes potential compromise of other users' data and systems.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating GDPR's data protection principles and HIPAA's security requirements for protected health information. Non-compliance may result in legal penalties, reputational damage, and loss of trust.

Mitigation Strategies

Upgrade Laranode to version 1.2.1 or later immediately using the provided one-liner script to avoid silent upgrade failures. Ensure sudo permissions are restricted to an explicit allowlist via laranode-sudoers.sh.

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