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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00335.

Exploitation poc

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Filigran OpenCTI affected
Version Status Constraints
3.3.1 affected
—

Configuration 1 [-]

cpe:2.3:a:citeum:opencti:3.3.1:*:*:*:*:*:*:*

No data.

Vendor Product Confidence Versions
Opencti-platform Opencti — —

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Tracking

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/OpenCTI-Platform/opencti cve-icon cve-icon
https://www.exploit-db.com/exploits/48595 cve-icon cve-icon
https://www.opencti.io/ cve-icon cve-icon
https://www.vulncheck.com/advisories/opencti-directory-traversal cve-icon cve-icon
History

Fri, 13 Feb 2026 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Citeum
Citeum opencti
CPEs cpe:2.3:a:citeum:opencti:3.3.1:*:*:*:*:*:*:*
Vendors & Products Citeum
Citeum opencti

Tue, 03 Feb 2026 15:00:00 +0000

Type Values Removed Values Added
First Time appeared Opencti-platform
Opencti-platform opencti
Vendors & Products Opencti-platform
Opencti-platform opencti

Mon, 02 Feb 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 30 Jan 2026 22:30:00 +0000

Type Values Removed Values Added
Description 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.
Title OpenCTI 3.3.1 - Directory Traversal
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-03-05T01:27:37.387Z

Reserved: 2026-01-28T18:18:30.524Z

Link: CVE-2020-37041

cve-icon Vulnrichment

Updated: 2026-02-02T20:11:36.198Z

cve-icon NVD

Status : Analyzed

Published: 2026-01-30T23:16:09.750

Modified: 2026-02-13T17:56:55.973

Link: CVE-2020-37041

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-02T09:26:58Z

Weaknesses