CVE-2020-37041: OpenCTI 3.3.1 - Directory Traversal

Published Jan 30, 2026

Updated

OpenCTI 3.3.1 is vulnerable to a directory traversal attack via the static/css endpoint. An unauthenticated attacker can read arbitrary files from the filesystem by sending crafted GET requests with path traversal sequences (e.g., '../') in the URL. For example, requesting /static/css//../../../../../../../../etc/passwd returns the contents of /etc/passwd. This vulnerability was discovered by Raif Berkay Dincel and confirmed on Linux Mint and Windows 10.

Affected Software

2 affected components

OpenCTI

Citeum Opencti=3.3.1

Event History

Jan 30, 2026

CVE Published

via MITRE·10:07 PM

Data Sourced

via MITRE·10:07 PM

DescriptionSeverityWeakness

Data Sourced

via NVD·11:16 PM

DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

What is the severity of CVE-2020-37041?

CVE-2020-37041 is classified as a medium severity vulnerability due to its potential for unauthorized file access.

How do I fix CVE-2020-37041?

To fix CVE-2020-37041, you should upgrade OpenCTI to a version that has addressed the directory traversal vulnerability.

Who is affected by CVE-2020-37041?

All users of OpenCTI version 3.3.1 are affected by CVE-2020-37041.

What type of attack is CVE-2020-37041 associated with?

CVE-2020-37041 is associated with directory traversal attacks that allow attackers to read files outside the intended directories.

Is authentication required to exploit CVE-2020-37041?

No, CVE-2020-37041 can be exploited by unauthenticated attackers, making it particularly critical.