Vulnerability · Published Jan 30, 2026 · Assigned by VulnCheck

CVE-2020-37041OpenCTI 3.3.1 - Directory Traversal

High 7.5

In plain English

A high-severity path traversal in OpenCTI from Filigran. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 65% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)1.1%top 34.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	pycti	no fix listed	PYSEC-2026-114

Affected products (as reported)

Vendor	Product	Versions
Filigran	OpenCTI	3.3.1

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

ExploitDB-48595 exploit
OpenCTI Official Homepage product
OpenCTI GitHub Repository product
VulnCheck Advisory: OpenCTI 3.3.1 - Directory Traversal third-party-advisory