How severe is CVE-2020-37113?

CVE-2020-37113 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-37113 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-37113?

CVE-2020-37113 affects Gunet Open Eclass Platform. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-37113?

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-2020-37113 have an EU (EUVD) identifier?

Yes. CVE-2020-37113 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-30982.

When was CVE-2020-37113 published?

CVE-2020-37113 was published on 2026-02-03 and last updated on 2026-06-17.

CVE-2020-37113

CVE-2020-37113 is a high-severity vulnerability in Gunet Open Eclass Platform with a CVSS 3.x base score of 8.8. 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-434.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 8.7
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2020-30982
Weakness: CWE-434
Affected product: Gunet Open Eclass Platform
Published: 2026-02-03
Last modified: 2026-06-17

Description

GUnet OpenEclass 1.7.3 allows authenticated users to bypass file extension restrictions when uploading files. By renaming a PHP file to .php3 or .PhP, an attacker can upload a web shell and execute arbitrary code on the server. This vulnerability enables remote code execution by bypassing the intended file type checks in the exercise submission feature.

Frequently asked questions

What is CVE-2020-37113?: GUnet OpenEclass 1.7.3 allows authenticated users to bypass file extension restrictions when uploading files. By renaming a PHP file to .php3 or .PhP, an attacker can upload a web shell and execute arbitrary code on the server. This vulnerability enables remote code execution by bypassing the intended file type checks in the exercise submission feature.
How severe is CVE-2020-37113?: CVE-2020-37113 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-37113 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-37113?: CVE-2020-37113 affects Gunet Open Eclass Platform. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-37113?: 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-2020-37113 have an EU (EUVD) identifier?: Yes. CVE-2020-37113 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-30982.
When was CVE-2020-37113 published?: CVE-2020-37113 was published on 2026-02-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gunet:open_eclass_platform:1.7.3:*:*:*:*:*:*:*

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