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CVE-2021-24693

29
FAUCET Score

CVE-2021-24693 is a critical Stored Cross-Site Scripting (XSS) vulnerability affecting the Simple Download Monitor WordPress plugin prior to version 3.9.5. It allows authenticated users with Contributor-level privileges to inject malicious scripts into the "File Thumbnail" post meta, which executes when viewed by other users, including administrators. This could lead to unauthorized actions like creating rogue admin accounts or installing malicious plugins. The vulnerability has a CVSS score of 9.0 (CRITICAL) due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation (KEV: No), the vulnerability has garnered significant community discussion (10 mentions) and exploit code has been published on GitHub. There are no known Metasploit, Nuclei, or ExploitDB modules available.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.9.5CPE matchmatch criteria
cpe:2.3:a:tipsandtricks-hq:simple_download_monitor:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

9.0CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.3
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.24%
Probability of exploitation in next 30 days
EPSS Percentile
66.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0124 is in the 78th percentile among its peer group of 265 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.6 Bluesky, 0.3 Mastodon, and 1.6 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

wpscan.com / vulnerability/4bb559b7-8dde-4c90-a9a6-d8dcfbea53a7
ExploitThird Party Advisory