How severe is CVE-2020-37044?

CVE-2020-37044 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-37044 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-37044?

CVE-2020-37044 affects Citeum Opencti. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-37044?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2020-37044 have an EU (EUVD) identifier?

Yes. CVE-2020-37044 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-30934.

When was CVE-2020-37044 published?

CVE-2020-37044 was published on 2026-01-30 and last updated on 2026-06-17.

CVE-2020-37044

CVE-2020-37044 is a medium-severity vulnerability in Citeum Opencti with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v4: 5.1
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2020-30934
Weakness: CWE-79
Affected product: Citeum Opencti
Published: 2026-01-30
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2020-37044?: 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.
How severe is CVE-2020-37044?: CVE-2020-37044 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-37044 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-37044?: CVE-2020-37044 affects Citeum Opencti. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-37044?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2020-37044 have an EU (EUVD) identifier?: Yes. CVE-2020-37044 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-30934.
When was CVE-2020-37044 published?: CVE-2020-37044 was published on 2026-01-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:citeum:opencti:3.3.1:*:*:*:*:*:*:*

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