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CVE-2021-24563

46
FAUCET Score

CVE-2021-24563 describes a stored Cross-Site Scripting (XSS) vulnerability in the Frontend Uploader WordPress plugin up to version 1.3.2. This flaw allows unauthenticated attackers to upload malicious HTML files containing JavaScript, which executes when accessed directly. The vulnerability has a CVSS score of 6.1 (Medium), indicating a network-based attack requiring user interaction, with potential impacts on confidentiality and integrity. While not listed in CISA's KEV catalog, an exploit (EDB-50655) is publicly available, though there is minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.3.2CPE matchmatch criteria
cpe:2.3:a:frontend_uploader_project:frontend_uploader:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
26.38%
Probability of exploitation in next 30 days
EPSS Percentile
97.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-50655 · Jan 12, 2022
This CVE's current EPSS score of 0.2638 is in the 99th percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/165515/WordPress-Frontend-Uploader-1.3.2-Cross-Site-Scripting.html
ExploitThird Party AdvisoryVDB Entry
wpscan.com / vulnerability/e53ef41e-a176-4d00-916a-3a03835370f1
ExploitThird Party Advisory