PatchSiren cyber security CVE debrief
CVE-2026-5203 CMS Made Simple CVE debrief
A path traversal vulnerability was found in CMS Made Simple up to 2.2.22, specifically in the _copyFilesToFolder function of the UserGuide Module XML Import. This issue allows for remote attacks and has been publicly disclosed. The project has confirmed that this has already been discovered and fixed for the next release. The vulnerability class is path traversal, and the likely operational impact includes unauthorized file access or modification. Source-confidence limits indicate that the issue has been reported early to the project.
- Vendor
- CMS Made Simple
- Product
- CMS Made Simple
- CVSS
- LOW 2
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-03-31
- Original CVE updated
- 2026-07-24
- Advisory published
- 2026-03-31
- Advisory updated
- 2026-07-24
Who should care
Users of CMS Made Simple up to version 2.2.22 should be aware of this vulnerability and take necessary precautions to protect their installations. Affected operators include administrators and users of the CMS Made Simple platform. Vulnerability-management and security teams should review the official advisory or CVE record to validate affected scope, severity, and vendor guidance.
Technical summary
The vulnerability is caused by a path traversal issue in the _copyFilesToFolder function of the UserGuide Module XML Import in CMS Made Simple up to 2.2.22. This allows an attacker to manipulate file paths, potentially leading to unauthorized file access or modification. The affected product context includes CMS Made Simple up to version 2.2.22. Defensive impact includes reviewing compensating controls for exposed systems while remediation is scheduled and verified.
Defensive priority
Low
Recommended defensive actions
- Update CMS Made Simple to the latest version
- Restrict access to the UserGuide Module XML Import
- Monitor for suspicious activity
- Review compensating controls for exposed systems while remediation is scheduled and verified
- Check relevant monitoring, detection, and logs for exposed assets that need extra review
- Track exceptions, retest remediated assets, and close the item only after evidence is documented
- Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
Evidence notes
The CVE record was published on 2026-03-31T16:16:35.723Z and last modified on 2026-07-24T20:10:00.147Z. The NVD entry is currently Deferred. This vulnerability affects CMS Made Simple up to version 2.2.22. The UserGuide Module XML Import is impacted, specifically the _copyFilesToFolder function. The issue allows for remote attacks and has been publicly disclosed. The project has confirmed that this has already been discovered and fixed for the next release. Evidence limits suggest verifying the vulnerability in controlled environments. Defensive verification tasks include reviewing official advisories and tracking exceptions.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-03-31T16:16:35.723Z and has not been modified since then. The NVD entry is currently Deferred.