Medium 5.4Published Jan 30, 2026

CVE-2020-37044OpenCTI 3.3.1 - Cross Site Scripting

Updated under an hour ago (Oct 26, 2026, 12:50 PM ET)

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It affects Filigran OpenCTI and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Filigran OpenCTI

Exploited in the last 30 days

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.

CVSS: 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Analyzed
Record last updated: Mar 4, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Filigran OpenCTI filigran:opencti (from the name)	3.3.1	CNA record
citeum opencti citeum:opencti	3.3.1	NVD

References

References

https://www.exploit-db.com/exploits/48595	exploit, third-party-advisory, vdb-entry
https://www.opencti.io/	product
https://github.com/OpenCTI-Platform/opencti	product
https://www.vulncheck.com/advisories/opencti-cross-site-scripting	third-party-advisory, broken-link

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.