Vulnerability Details CVE-2026-53906
MCO is vulnerable to Path Disclosure and Path Traversal in file handling functionality related to data export and upload. Improper validation of the filename parameter allows writing files to arbitrary locations as well as indirect disclosure of absolute server paths through error messages.
Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 25.3.3.1 but may also affect other versions.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 33.6%
CVSS Severity
CVSS v3 Score 8.2
Products affected by CVE-2026-53906
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cpe:2.3:a:mycomplianceoffice:mycomplianceoffice:25.3.3.1