CVE-2021-24563
Frontend Uploader <= 1.3.2 - Unauthenticated Stored Cross-Site Scripting
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
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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
- Record
CVE-2021-24563- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
Frontend Uploader <= 1.3.2 - Unauthenticated Stored Cross-Site Scripting
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
- Record
CVE-2021-24563- Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2021-11475 No score
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
- Record
EUVD-2021-11475- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-287r-36rw-cfgc No score
The Frontend Uploader WordPress plugin through 1.3.2 does not prevent HTML files from being...
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
- Record
GHSA-287r-36rw-cfgc- Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | WordPress Plugin Frontend Uploader 1.3.2 - Stored Cross Site Scripting (XSS) (Unauthenticated) | 2022-01-12 |
| PoC in GitHub | V35HR4J/CVE-2021-24563 | 2021-10-05 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-24563 is a medium vulnerability (CVSS 6.1) in Frontend Uploader Project Uploader, published October 11, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 26.3%, the 98th percentile. No source names a fixed version.