How severe is CVE-2020-9447?

CVE-2020-9447 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-9447 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-9447?

CVE-2020-9447 affects Gwtupload Project Gwtupload. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-9447?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-9447 published?

CVE-2020-9447 was published on 2020-02-28 and last updated on 2026-06-17.

CVE-2020-9447

CVE-2020-9447 is a medium-severity vulnerability in Gwtupload Project Gwtupload with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Gwtupload Project Gwtupload
Published: 2020-02-28
Last modified: 2026-06-17

Description

There is an XSS (cross-site scripting) vulnerability in GwtUpload 1.0.3 in the file upload functionality. Someone can upload a file with a malicious filename, which contains JavaScript code, which would result in XSS. Cross-site scripting enables attackers to steal data, change the appearance of a website, and perform other malicious activities like phishing or drive-by hacking.

Frequently asked questions

What is CVE-2020-9447?: There is an XSS (cross-site scripting) vulnerability in GwtUpload 1.0.3 in the file upload functionality. Someone can upload a file with a malicious filename, which contains JavaScript code, which would result in XSS. Cross-site scripting enables attackers to steal data, change the appearance of a website, and perform other malicious activities like phishing or drive-by hacking.
How severe is CVE-2020-9447?: CVE-2020-9447 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-9447 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-9447?: CVE-2020-9447 affects Gwtupload Project Gwtupload. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-9447?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-9447 published?: CVE-2020-9447 was published on 2020-02-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gwtupload_project:gwtupload:1.0.3:*:*:*:*:*:*:*

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