CVE-2020-36845
CVE-2020-36845 is a medium-severity vulnerability in Knowbe4 Security Awareness Training with a CVSS 3.x base score of 5.3. 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-601.
Key facts
- Severity: Medium (CVSS 3.x base score 5.3)
- EPSS exploit prediction: 0% (11th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2020-30795
- Weakness: CWE-601
- Affected product: Knowbe4 Security Awareness Training
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is 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. The response has a SCRIPT element that sets window.location.href to an arbitrary https URL.
- How severe is CVE-2020-36845?
- CVE-2020-36845 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
- Is CVE-2020-36845 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-36845?
- CVE-2020-36845 affects Knowbe4 Security Awareness Training. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-36845?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2020-36845 have an EU (EUVD) identifier?
- Yes. CVE-2020-36845 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-30795.
- When was CVE-2020-36845 published?
- CVE-2020-36845 was published on 2025-04-20 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:knowbe4:security_awareness_training:*:*:*:*:*:*:*:*
More vulnerabilities in Knowbe4 Security Awareness Training
- CVE-2020-36844 — Medium (CVSS 6.1): The KnowBe4 Security Awareness Training application before 2020-01-10 allows reflected XSS. The response has a SCRIPT…
All CVEs affecting Knowbe4 Security Awareness Training →
Other CWE-601 (Open Redirect) vulnerabilities
- CVE-2018-3774 — Critical (CVSS 10.0): Incorrect parsing in url-parse <1.4.3 returns wrong hostname which leads to multiple vulnerabilities such as SSRF, Open…
- CVE-2019-25282 — Critical (CVSS 9.8): V-SOL GPON/EPON OLT Platform v2.03 contains an open redirect vulnerability in the script that allows attackers to…
- CVE-2020-36912 — Critical (CVSS 9.8): Plexus anblick Digital Signage Management 3.1.13 contains an open redirect vulnerability in the 'PantallaLogin' script…
- CVE-2025-43526 — Critical (CVSS 9.8): This issue was addressed with improved URL validation. This issue is fixed in Safari 26.2, macOS Tahoe 26.2. On a Mac…
- CVE-2025-55031 — Critical (CVSS 9.8): Malicious pages could use Firefox for iOS to pass FIDO: links to the OS and trigger the hybrid passkey transport. An…
- CVE-2024-22891 — Critical (CVSS 9.8): Nteract v.0.28.0 was discovered to contain a remote code execution (RCE) vulnerability via the Markdown link.