What’s Vulnerable › Vulnerabilities

CVE-2020-37044: OpenCTI 3.3.1 - Cross Site Scripting

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-01-30 · updated 2026-06-17
• Weakness: CWE-79

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.

Affected products

• OpenCTI-Platform opencti: 3.3.1

References

• https://github.com/OpenCTI-Platform/opencti
• https://www.exploit-db.com/exploits/48595
• https://www.opencti.io/
• https://www.vulncheck.com/advisories/opencti-cross-site-scripting

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