WordPress plugin
Simple Download Monitor <= 3.9.5 — Contributor+ Arbitrary Thumbnail Removal
CVE-2021-24698Published · Updated Action summary
Affected: <3.9.6Update to 3.9.6 or newer
All remediation steps- Severity
- Medium4.3
- CVSS
- 4.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-284 Improper Access Control
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Simple Download Monitor simple-download-monitor
- Affected< 3.9.6
- Patched in3.9.6
Update to 3.9.6 or newer.
You are affected if you run < 3.9.6. Version 3.9.6 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Simple Download Monitor.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 3.9.6, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Simple Download Monitor to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to apple502j.
The Simple Download Monitor WordPress plugin before 3.9.6 allows users with a role as low as Contributor to remove thumbnails from downloads they do not own, even if they cannot normally edit the download.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Simple Download Monitor
All 18| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium4.3 | Missing Authorization <4.1.3Update to 4.1.3 | CVE-2026-118637 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting via Custom Field ≤4.0.5Update to 4.0.6 | CVE-2026-2383 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting ≤3.9.34Update to 3.9.35 | CVE-2025-58197 | |
| Medium6.5 | Simple Download Monitor <= 3.9.33 – Authenticated (Contributor+) SQL Injection via order parameter in Log Export functionality ≤3.9.33Update to 3.9.34 | CVE-2025-8977 | |
| Medium4.9 | Authenticated (Administrator+) SQL Injection ≤3.9.25Update to 3.9.26 | CVE-2025-24663 |
- Medium4.3Missing Authorization
<4.1.3Update to 4.1.3
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via Custom Field
≤4.0.5Update to 4.0.6
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤3.9.34Update to 3.9.35
- Medium6.5Simple Download Monitor <= 3.9.33 – Authenticated (Contributor+) SQL Injection via order parameter in Log Export functionality
≤3.9.33Update to 3.9.34
- Medium4.9Authenticated (Administrator+) SQL Injection
≤3.9.25Update to 3.9.26
Timeline
CVE published
Severity medium, CVSS 4.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.