CVE-2026-53906
CVE-2026-53906 is a high-severity vulnerability in Mycomplianceoffice with a CVSS 3.x base score of 8.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.
Key facts
- Severity: High (CVSS 3.x base score 8.2)
- CVSS v4: 5.1
- EPSS exploit prediction: 0% (26th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-22
- Affected product: Mycomplianceoffice
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2026-53906?
- CVE-2026-53906 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability none.
- Is CVE-2026-53906 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-53906?
- CVE-2026-53906 affects Mycomplianceoffice. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-53906?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2026-53906 published?
- CVE-2026-53906 was published on 2026-07-01 and last updated on 2026-07-06.
References
Affected products (1)
- cpe:2.3:a:mycomplianceoffice:mycomplianceoffice:25.3.3.1:*:*:*:*:*:*:*
More vulnerabilities in Mycomplianceoffice
- CVE-2026-53903 — High (CVSS 8.1): MCO is vulnerable to an Insecure Direct Object Reference (IDOR) vulnerability in the…
- CVE-2026-53905 — High (CVSS 7.1): MCO does not properly enforce authorization checks in the /customer/servlet/mco/webapi/admin-view-hierarchy/get-acl-tree…
- CVE-2026-53909 — Medium (CVSS 6.5): MCO does not correctly validate types of uploaded files. File upload validation functionality relies only on…
- CVE-2026-53902 — Medium (CVSS 6.5): MCO does not properly enforce authorization checks in the /customer/servlet/mco/webapi/profile-sections/group-membership…
- CVE-2026-53907 — Medium (CVSS 5.4): MCO is vulnerable to Stored Cross‑Site Scripting (XSS) via the application logo upload functionality. An attacker…
- CVE-2026-53908 — Medium (CVSS 4.3): MCO is vulnerable to User Enumeration through authentication-related functionalities. The application returns…
All CVEs affecting Mycomplianceoffice →
Other CWE-22 (Path Traversal) vulnerabilities
- CVE-2026-48282 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Limitation of a Pathname to a Restricted…
- CVE-2026-54917 — Critical (CVSS 10.0): SeaweedFS is a distributed storage system for object storage (S3), file systems, and Iceberg tables. Prior to 4.30, the…
- CVE-2026-11429 — Critical (CVSS 10.0): Two endpoints in the Vault Service ScriptsController, shared by Altium Enterprise Server and Altium 365, accept file…
- CVE-2026-34909 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to…
- CVE-2026-7411 — Critical (CVSS 10.0): In Eclipse BaSyx Java Server SDK versions prior to 2.0.0-milestone-10, inadequate path normalization in the Submodel…
- CVE-2026-36767 — Critical (CVSS 10.0): A path traversal vulnerability in the /content/images/add endpoint of shopizer v3.2.5 allows attackers write arbitrary…