Medium severity · published Feb 27, 2026
CVE-2026-2383
Simple Download Monitor <= 4.0.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via Custom Field
6.4
CVSS
0.2%
EPSS
No
On KEV
Description
The Simple Download Monitor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via custom field in all versions up to, and including, 4.0.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SD
Simple Download Monitor · mra13
through 4.0.5 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2383
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2383
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/simple-download-monitor/tags/4.0.3/sdm-shortcodes.php#L543
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/simple-download-monitor/trunk/sdm-shortcodes.php#L543
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3464024%40simple-download-monitor%2Ftrunk&old=3430786%40simple-download-monitor%2Ftrunk&sfp_email=&sfph_mail=
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/556e41d1-2c98-4175-87ba-29689704c2f0?source=cve
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