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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.

PUBLISHED Reserved 2026-01-28 | Published 2026-01-30 | Updated 2026-02-02 | Assigner VulnCheck




HIGH: 7.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem types

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

3.3.1
affected

Credits

Raif Berkay Dincel finder

References

www.exploit-db.com/exploits/48595 (ExploitDB-48595) exploit

www.opencti.io/ (OpenCTI Official Homepage) product

github.com/OpenCTI-Platform/opencti (OpenCTI GitHub Repository) product

www.vulncheck.com/advisories/opencti-directory-traversal (VulnCheck Advisory: OpenCTI 3.3.1 - Directory Traversal) third-party-advisory

cve.org (CVE-2020-37041)

nvd.nist.gov (CVE-2020-37041)

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