How severe is CVE-2020-37041?

CVE-2020-37041 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-37041 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-37041?

CVE-2020-37041 affects Citeum Opencti. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-37041?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2020-37041 have an EU (EUVD) identifier?

Yes. CVE-2020-37041 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-30937.

When was CVE-2020-37041 published?

CVE-2020-37041 was published on 2026-01-30 and last updated on 2026-06-17.

CVE-2020-37041

CVE-2020-37041 is a high-severity vulnerability in Citeum Opencti with a CVSS 3.x base score of 7.5. 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-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 7.1
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2020-30937
Weakness: CWE-22
Affected product: Citeum Opencti
Published: 2026-01-30
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2020-37041?: 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.
How severe is CVE-2020-37041?: CVE-2020-37041 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-37041 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-37041?: CVE-2020-37041 affects Citeum Opencti. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-37041?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2020-37041 have an EU (EUVD) identifier?: Yes. CVE-2020-37041 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-30937.
When was CVE-2020-37041 published?: CVE-2020-37041 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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