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CVE-2020-37113

8.7
High
EPSS 0.81%Patch availableFeb 4, 2026

RCE via file extension bypass in OpenEclass 1.7.3

common questions

Is CVE-2020-37113 being exploited?

Not confirmed. CVE-2020-37113 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.81% probability of exploitation in the next 30 days.

How severe is CVE-2020-37113?

CVE-2020-37113 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.

Is there a patch for CVE-2020-37113?

Yes. A fix has been recorded for CVE-2020-37113. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.

What does CVE-2020-37113 affect?

CVE-2020-37113 affects GUnet OpenEclass 1.7.3. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

What should I do about CVE-2020-37113?

Patch when available; enforce strict file-type checks and restrict uploads

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

executive summary
technical analysis
affected
GUnet OpenEclass 1.7.3
impact

Authenticated user bypasses file-type checks to upload PHP; executes code on server

action required

Immediate action required

affected versions
Openeclass GUnet OpenEclass
  • affected1.7.3 (2007)

As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.

how to fix
Remediation steps are tailored for users whose stack is affected. Add this technology to your stack to see the fix checklist.
references
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