CVE-2020-9447: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

April 22, 2021 (updated January 4, 2022)

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.

References

github.com/advisories/GHSA-5chj-xprr-7qqx
github.com/manolo/gwtupload/issues/32
nvd.nist.gov/vuln/detail/CVE-2020-9447

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