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Vulnerabilities

Vulnerability · CVE-2020-36845

The KnowBe4 Security Awareness Training application before 2020-01-10 contains a redirect function that does not validate the destination URL before redirecting.

Published Apr 20, 2025 · catalog updated Apr 21, 2025 · KnowBe4 Security Awareness Training

Check this week

CVE-2020-36845 is not in CISA KEV. FIRST estimates a 26.00% chance of exploitation in the next 30 days. Check whether you run KnowBe4 Security Awareness Training.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
26.00%
Remediation
Version ranges on file
Affected products
vendor KnowBe4 Security Awareness Training 0 <2020-01-10

The KnowBe4 Security Awareness Training application before 2020-01-10 contains a redirect function that does not validate the destination URL before redirecting. The response has a SCRIPT element that sets window.location.href to an arbitrary https URL.

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 KnowBe4 Security Awareness Training 0 <2020-01-100 <2020-01-10

How to fix CVE-2020-36845

What to do

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

Should you patch?

CVE-2020-36845 is not in CISA KEV. FIRST estimates a 26.00% chance of exploitation in the next 30 days. Check whether you run KnowBe4 Security Awareness Training.

Which versions are affected?

Compare what you have installed with KnowBe4 Security Awareness Training 0 <2020-01-10 0 <2020-01-10. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 26.00%. 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. Apr 20, 2025 · EUVD

    Detected

    The KnowBe4 Security Awareness Training application before 2020-01-10 contains a redirect function that does not validate the destination URL before redirecting. The response has a SCRIPT element that sets window.location.href to an arbitrary https URL.

  2. Apr 21, 2025 · EUVD

    Updated

    The KnowBe4 Security Awareness Training application before 2020-01-10 contains a redirect function that does not validate the destination URL before redirecting. The response has a SCRIPT element that sets window.location.href to an arbitrary https URL.

Sources

  • CVE.orgVulnerability recordCVE-2020-36845

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2020-30795

    The KnowBe4 Security Awareness Training application before 2020-01-10 contains a redirect function that does not validate the destination URL before redirecting. The response has a SCRIPT element that sets window.location.href to an arbitrary https URL.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.