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Vulnerability Details :

CVE-2026-53906

Summary
Assigner-CERT-PL
Assigner Org ID-4bb8329e-dd38-46c1-aafb-9bf32bcb93c6
Published At-01 Jul, 2026 | 11:58
Updated At-01 Jul, 2026 | 13:39
Rejected At-
Credits

Path Disclosure and Path Traversal in MCO

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:CERT-PL
Assigner Org ID:4bb8329e-dd38-46c1-aafb-9bf32bcb93c6
Published At:01 Jul, 2026 | 11:58
Updated At:01 Jul, 2026 | 13:39
Rejected At:
▼CVE Numbering Authority (CNA)
Path Disclosure and Path Traversal in MCO

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.

Affected Products
Vendor
MyComplianceOffice
Product
MCO
Default Status
unknown
Versions
Affected
  • 25.3.3.1 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-22CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWECWE-209CWE-209 Generation of Error Message Containing Sensitive Information
Type: CWE
CWE ID: CWE-22
Description: CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Type: CWE
CWE ID: CWE-209
Description: CWE-209 Generation of Error Message Containing Sensitive Information
Metrics
VersionBase scoreBase severityVector
4.05.1MEDIUM
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
Version: 4.0
Base score: 5.1
Base severity: MEDIUM
Vector:
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
Metrics Other Info
Impacts
CAPEC IDDescription
CAPEC-139CAPEC-139 Relative Path Traversal
CAPEC ID: CAPEC-139
Description: CAPEC-139 Relative Path Traversal
Solutions

Configurations

Workarounds

Exploits

Credits

finder
Hubert Decyusz (AFINE Team)
Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://cert.pl/en/posts/2026/07/CVE-2026-53902
third-party-advisory
https://mco.mycomplianceoffice.com/
product
Hyperlink: https://cert.pl/en/posts/2026/07/CVE-2026-53902
Resource:
third-party-advisory
Hyperlink: https://mco.mycomplianceoffice.com/
Resource:
product
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:cvd@cert.pl
Published At:01 Jul, 2026 | 13:17
Updated At:01 Jul, 2026 | 18:05

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.05.1MEDIUM
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
N/A
Type: Secondary
Version: 4.0
Base score: 5.1
Base severity: MEDIUM
Vector:
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
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-22Secondarycvd@cert.pl
CWE-209Secondarycvd@cert.pl
CWE ID: CWE-22
Type: Secondary
Source: cvd@cert.pl
CWE ID: CWE-209
Type: Secondary
Source: cvd@cert.pl
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://cert.pl/en/posts/2026/07/CVE-2026-53902cvd@cert.pl
N/A
https://mco.mycomplianceoffice.com/cvd@cert.pl
N/A
Hyperlink: https://cert.pl/en/posts/2026/07/CVE-2026-53902
Source: cvd@cert.pl
Resource: N/A
Hyperlink: https://mco.mycomplianceoffice.com/
Source: cvd@cert.pl
Resource: N/A

Change History

0
Information is not available yet

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