CVE-2021-47835

5.1 mediumEPSS 0.4%

Medium (5.1). EPSS 0.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

5.1 medium

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

CVSS 3.1

7.2 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 38% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-01-16
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

https://freeter.io/
https://imgur.com/a/iBuKWm4
https://www.exploit-db.com/exploits/49833
https://www.vulncheck.com/advisories/freeter-persistent-cross-site-scripting
https://www.vulncheck.com/advisories/freeter-persistent-cross-site-scripting

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