What is CVE-2021-47835?

CVE-2021-47835 is a high-severity vulnerability in Freeter, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-01-16.

How severe is CVE-2021-47835?

High severity. CVSS v3 base score is 7.2 out of 10.

XSS in Freeter

CVE-2021-47835

Freeter 1.2.1 contains a persistent cross-site scripting vulnerability that allows attackers to store malicious payloads in custom widget titles and files. Attackers can craft malicious files with embedded scripts that execute when victims interact with the application, potentially enabling remote code execution.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.004 (34.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

Affected products

Freeter — versions 1.2.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

disclosure@vulncheck.com (exploit)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (exploit)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2021-47835?: CVE-2021-47835 is a high-severity vulnerability in Freeter, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-01-16.
How severe is CVE-2021-47835?: High severity. CVSS v3 base score is 7.2 out of 10.