What is CVE-2021-23439?

CVE-2021-23439 is a medium-severity vulnerability in Johndatserakis File-Upload-With-Preview, classified under Cross-site Scripting. CVSS score: 4.2/10. Published 2021-09-05.

How severe is CVE-2021-23439?

Medium severity. CVSS v3 base score is 4.2 out of 10.

XSS in Johndatserakis File-Upload-With-Preview

CVE-2021-23439

This affects the package file-upload-with-preview before 4.2.0. A file containing malicious JavaScript code in the name can be uploaded (a user needs to be tricked into uploading such a file).

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.009 (56.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N.

Affected products

Johndatserakis File-upload-with-preview
N/a File-upload-with-preview — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

report@snyk.io (Third Party Advisory, x_refsource_MISC)
report@snyk.io (x_refsource_MISC, Broken Link)
report@snyk.io (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-23439?: CVE-2021-23439 is a medium-severity vulnerability in Johndatserakis File-Upload-With-Preview, classified under Cross-site Scripting. CVSS score: 4.2/10. Published 2021-09-05.
How severe is CVE-2021-23439?: Medium severity. CVSS v3 base score is 4.2 out of 10.