Opencti
CVE-2020-37041
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V5 - File Handling Path canonicalization, traversal prevention
MITRE ATT&CK
2 techniques across 2 tactics: Discovery, Collection The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS 7.5 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: None. Exploitation no authentication required. Public exploit/POC available. |
| Exploit ScenarioDerived | An attacker without authentication could exploit this vulnerability to compromise the affected system. |
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Alert meAnalysisAIv1 – Mar 12, 2026
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. [CVSS 7.5 HIGH]
RemediationAI
Monitor vendor advisories for a patch. Validate and sanitize file path inputs. Use allowlists. Restrict network access to the affected service where possible.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in pypi
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Classified as CWE-22 (Path Traversal). Affects Opencti. 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.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
2DescriptionCVE.org
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.
Executive ViewAI
OpenCTI instances running version 3.3.1 are exposed to unauthenticated file disclosure attacks that could leak sensitive configuration files, credentials, and intellectual property without authentication. This vulnerability poses an immediate risk to organizations using affected versions, as public exploits are available and the vendor has not released a patch.
Implement WAF rules blocking path traversal patterns (../, ..\, percent-encoded variants); restrict network access to /static/css endpoint via firewall ACLs; disable the static CSS endpoint if functionally possible; implement reverse proxy authentication layer; deploy network segmentation to limit OpenCTI exposure; enable and monitor access logs for suspicious requests; run file integrity monitoring on sensitive configuration files.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Exploit-DB
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Path traversal exploits occur when applications use user-controlled input to construct file system paths without proper validation.
Affected Products (CPE)CVE.org
Unauthenticated attackers can escalate privileges in OpenCTI 6.6.0-6.9.12 by impersonating any user account, including t
Server-Side Template Injection in OpenCTI notifier templates allows privileged administrators with 'Manage customization
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Authenticated attackers can delete arbitrary workspaces in OpenCTI versions prior to 6.8.1 due to missing ownership chec
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In OpenCTI through 5.2.4, a broken access control vulnerability has been identified in the profile endpoint. Rated high
Privilege escalation in OpenCTI prior to 6.9.7 allows an organization admin to gain elevated platform-wide privileges by
Authorization bypass in OpenCTI prior to version 7.260326.0 lets any authenticated user holding the KNOWLEDGE_KNUPDATE p
Elasticsearch Painless script injection via OpenCTI's GraphQL API allows any authenticated user holding the KNOWLEDGE ca
OpenCTI versions prior to 6.9.1 contain an authorization bypass vulnerability in the GraphQL mutation 'IndividualDeletio