ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2020-37113

GUnet OpenEclass 1.7.3 allows authenticated users to bypass file extension restrictions when uploading files.

Published Feb 3, 2026 · catalog updated Jul 28, 2026 · Openeclass GUnet OpenEclass

Last checked Nov 5, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2020-37113. EPSS is 0.93%. Act only if a listed version of Openeclass GUnet OpenEclass is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High8.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.93%
Remediation
Vendor / distro source
Affected products
vendor Openeclass GUnet OpenEclass 1.7.3 (2007)

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Openeclass GUnet OpenEclass 1.7.3 (2007)1.7.3 (2007)

How to fix CVE-2020-37113

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2020-37113. EPSS is 0.93%. Act only if a listed version of Openeclass GUnet OpenEclass is installed.

Which versions are affected?

Compare what you have installed with Openeclass GUnet OpenEclass 1.7.3 (2007) 1.7.3 (2007). Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.93%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 3, 2026 · EUVD

    Detected

    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.

  2. Jul 28, 2026 · EUVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2020-37113

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-37113

    30-day exploitation probability 0.93%

    first.org
  • EUVDVulnerability recordEUVD-2020-30982

    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

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 5, 2026
  • CVE.orgNov 4, 2026
  • EUVDNov 2, 2026