CVE-2026-53906

HIGH

Mycomplianceoffice Mco < 25.3.3.1 - Path Traversal

Title source: rule
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-53906. PoCs published by HermesNA-1.

AI-analyzed exploit summary This repository contains an auto-generated stub module for CVE-2026-53906, a path traversal and file write vulnerability in MCO's file handling functionality. The code includes placeholder logic for probing targets but lacks actual exploit implementation.

Description

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.

Exploits (1)

github STUB 1 stars
by HermesNA-1 · pythonpoc
https://github.com/HermesNA-1/SnakeSploit/tree/main/data/modules_generated/cve-2026-53906_mco_vulnerable.py

This repository contains an auto-generated stub module for CVE-2026-53906, a path traversal and file write vulnerability in MCO's file handling functionality. The code includes placeholder logic for probing targets but lacks actual exploit implementation.

Classification
Stub 99%
Attack Type
Other
Complexity
Moderate
Reliability
Theoretical
Target: MCO (MyComplianceOffice)
No auth needed
Prerequisites: Network access to the target MCO instance · Vulnerable version of MCO (unspecified in stub)
mistral-large-3 · analyzed Jul 09, 2026 Full analysis →

References (2)

Core 2
Core References
Third Party Advisory third-party-advisory
https://cert.pl/en/posts/2026/07/CVE-2026-53902

Scores

CVSS v3 8.2
EPSS 0.0034
EPSS Percentile 26.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-209 CWE-22
Status published
Products (2)
MyComplianceOffice/MCO 25.3.3.1
mycomplianceoffice/mycomplianceoffice 25.3.3.1
Published Jul 01, 2026
Tracked Since Jul 01, 2026