CVE-2021-24563Frontend Uploader XSS
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
Published Oct 11, 2021 · Updated Nov 21, 2024 · Also known as 770f3c25-effb-40ea-bd1c-7874c456ab0e, WORDFENCE-770f3c25-effb-40ea-bd1c-7874c456ab0e
Key Facts
Routine patching- CVE-2021-24563 is a medium-severity vulnerability (CVSS 6.1 v3.1) affecting Frontend Uploader (Frontend Uploader Project).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 26% probability of exploitation in the next 30 days.
- Fixed versions are available, including Frontend Uploader <=1.3.2, Frontend Uploader 1.3.2.
- Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.
Scores
CVSS v3.1
6.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS (30-day exploit likelihood)
26%
Higher than 97.9% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
36/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
2
Proof-of-concept links
In-the-wild evidence
1
Reports of active use
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
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Frontend UploaderFrontend Uploader Project | >= 1.3.2 | 1.3.2 |
Patched Releases
Frontend Uploader
<=1.3.2
Timeline
Publicly disclosed
Oct 11, 2021
Last updated
Nov 21, 2024
Weakness Type
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
FAQ
Common Questions.
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
Affected: Frontend Uploader (Frontend Uploader Project) versions >= 1.3.2. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Frontend Uploader <=1.3.2, Frontend Uploader 1.3.2.
Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.
Is CVE-2021-24563 On Your Attack Surface?
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