MEDIUM

CVE-2021-24563

CVSS v3

6.1

MEDIUM

EPSS Score

26.3 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2021-24563 yet.

Full record on NVD

Description

The Frontend Uploader WordPress plugin through 1.3.2 does not prevent HTML files from being uploaded via its form, allowing unauthenticated user to upload a malicious HTML file containing JavaScript for example, which will be triggered when someone access the file directly

Technical details

Published: 2021-10-11
Exploit-DB: EDB-50655

Frequently asked questions

What is CVE-2021-24563?

Is CVE-2021-24563 actively exploited?

Active exploitation of CVE-2021-24563 has not been confirmed. Its EPSS score was 26.3% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-24563?

CVE-2021-24563 has a CVSS v3 base score of 6.1 (MEDIUM severity).

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