XSS in Frontend Uploader Project
CVE-2021-24563
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
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.264 (98.0th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.264 · newest: 0.264 · change: 0.000
Affected products
- Frontend Uploader Project
- Frontend Uploader — versions 1.3.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wpscan.com/vulnerability/e53ef41e-a176-4d00-916a-3a03835370f1 (Exploit, Third Party Advisory)
- packetstormsecurity.com/files/165515/WordPress-Frontend-Uploader-1.3.2-Cross-Si… (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-24563?
- CVE-2021-24563 is a medium-severity vulnerability in Frontend Uploader Project, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-10-11.
- How severe is CVE-2021-24563?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2021-24563 known to be exploited?
- 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.