Is CVE-2026-5203 actively exploited?

No active exploitation of CVE-2026-5203 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-5203 be exploited remotely?

Yes. CVE-2026-5203 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-5203?

CVE-2026-5203 has a CVSS score of 4.7 (MEDIUM).

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MEDIUM

CVE-2026-5203

CWE-22Published: March 31, 2026· Updated: Apr 1, 2026

4.7

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.9th

Official Description

A vulnerability was found in CMS Made Simple up to 2.2.22. This impacts the function _copyFilesToFolder in the library modules/UserGuide/lib/class.UserGuideImporterExporter.php of the component UserGuide Module XML Import. The manipulation results in path traversal. It is possible to launch the attack remotely. The exploit has been made public and could be used. This issue has been reported early to the project. They confirmed, that "this has already been discovered and fixed for the next release."

NVD Source

Technical Analysis

CVE-2026-5203 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.