CVE-2026-53906

UNKNOWN 0.0

Path Disclosure and Path Traversal in MCO

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-22 CWE-209
Vendor	mycomplianceoffice
Product	mco
Published	Jul 1, 2026
Last Updated	Jul 1, 2026

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Affected Versions

MyComplianceOffice / MCO

25.3.3.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

cert.pl: https://cert.pl/en/posts/2026/07/CVE-2026-53902 mco.mycomplianceoffice.com: https://mco.mycomplianceoffice.com/

Credits

Hubert Decyusz (AFINE Team)