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.

CVSS v3 8.2 HIGH

8.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://cert.pl/en/posts/2026/07/CVE-2026-53902	Third Party Advisory
https://mco.mycomplianceoffice.com/	Product

Configurations

Configuration 1 (hide)

cpe:2.3:a:mycomplianceoffice:mycomplianceoffice:25.3.3.1:*:*:*:*:*:*:*

History

25 Oct 2026, 17:10

Type	Values Removed	Values Added
Summary		(es) MCO es vulnerable a la Divulgación de Rutas y al Salto de Ruta en la funcionalidad de manejo de archivos relacionada con la exportación y carga de datos. La validación incorrecta del parámetro de nombre de archivo permite escribir archivos en ubicaciones arbitrarias, así como la divulgación indirecta de rutas absolutas del servidor a través de mensajes de error. Debido a que los intentos de contacto con el proveedor no tuvieron éxito, la vulnerabilidad solo se ha confirmado en la versión 25.3.3.1, pero también puede afectar a otras versiones.

Information

Published : 2026-07-01 13:17

Updated : 2026-10-25 17:10

NVD link : CVE-2026-53906

Mitre link : CVE-2026-53906

CVE.ORG link : CVE-2026-53906

JSON object : View

Products Affected

mycomplianceoffice

mycomplianceoffice

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-209

Generation of Error Message Containing Sensitive Information

{"id": "CVE-2026-53906", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53906", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-01T13:39:08.768534Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.2, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 4.2, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "cvd@cert.pl", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 5.1, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "subIntegrityImpact": "LOW", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "cvd@cert.pl", "affectedData": [{"vendor": "MyComplianceOffice", "product": "MCO", "versions": [{"status": "affected", "version": "25.3.3.1", "versionType": "custom"}], "defaultStatus": "unknown"}]}], "published": "2026-07-01T13:17:45.717", "references": [{"url": "https://cert.pl/en/posts/2026/07/CVE-2026-53902", "tags": ["Third Party Advisory"], "source": "cvd@cert.pl"}, {"url": "https://mco.mycomplianceoffice.com/", "tags": ["Product"], "source": "cvd@cert.pl"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "cvd@cert.pl", "description": [{"lang": "en", "value": "CWE-22"}, {"lang": "en", "value": "CWE-209"}]}], "descriptions": [{"lang": "en", "value": "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.\n\nBecause vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 25.3.3.1\u00a0but may also affect other versions."}, {"lang": "es", "value": "MCO es vulnerable a la Divulgaci\u00f3n de Rutas y al Salto de Ruta en la funcionalidad de manejo de archivos relacionada con la exportaci\u00f3n y carga de datos. La validaci\u00f3n incorrecta del par\u00e1metro de nombre de archivo permite escribir archivos en ubicaciones arbitrarias, as\u00ed como la divulgaci\u00f3n indirecta de rutas absolutas del servidor a trav\u00e9s de mensajes de error.\n\nDebido a que los intentos de contacto con el proveedor no tuvieron \u00e9xito, la vulnerabilidad solo se ha confirmado en la versi\u00f3n 25.3.3.1, pero tambi\u00e9n puede afectar a otras versiones."}], "lastModified": "2026-10-25T17:10:00.197", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:mycomplianceoffice:mycomplianceoffice:25.3.3.1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "48DA2BC8-3A28-4A74-9B08-67ECA8A34953"}], "operator": "OR"}]}], "sourceIdentifier": "cvd@cert.pl"}