CVE-2020-37044
OpenCTI 3.3.1 - Cross Site Scripting
- State
- Published
- Severity
- 5.1 Medium
- Published
- Jan 30, 2026
- Updated
- Mar 5, 2026
- Reserved
- Jan 28, 2026
Description
OpenCTI 3.3.1 is vulnerable to a reflected cross-site scripting (XSS) attack via the /graphql endpoint. An attacker can inject arbitrary JavaScript code by sending a crafted GET request with a malicious payload in the query string, leading to execution of JavaScript in the victim's browser. For example, a request to /graphql?'"--></style></scRipt><scRipt>alert('Raif_Berkay')</scRipt> will trigger an alert. This vulnerability was discovered by Raif Berkay Dincel and confirmed on Linux Mint and Windows 10.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N | VulnCheck |
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
OpenCTIFiligran |
|
References
- ExploitDB-48595exploit
- OpenCTI Official Homepageproduct
- OpenCTI GitHub Repositoryproduct
- VulnCheck Advisory: OpenCTI 3.3.1 - Cross Site Scriptingthird-party-advisory
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