CVE-2026-70383
Received Received - Intake

Path Traversal in DigiDoc4 Client

Publication date: 2026-08-20

Last updated on: 2026-08-20

Assigner: ENISA

Description
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Estonian Information System Authority (RIA) DigiDoc4 client. This issue affects DigiDoc4: from 4.0.0 before 4.11.0.

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Meta Information

Published
2026-08-20
Last Modified
2026-08-20
Generated
2026-08-20
AI Q&A
2026-08-20
EPSS Evaluated
N/A
NVD
CVE-2026-70383
EUVD
EUVD-2026-63374

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
estonian_information_system_authority digidoc4 From 4.0.0 (inc) to 4.11.0 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-22 The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

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Executive Summary

This is a Path Traversal vulnerability in the Estonian Information System Authority's DigiDoc4 client software versions 4.0.0 to 4.11.0. Path Traversal allows attackers to access files outside of intended directories by manipulating file paths. This could enable unauthorized access to sensitive system files or data.

Detection Guidance

Since this is a path traversal vulnerability in DigiDoc4, detection involves checking for unusual file access patterns or unauthorized file reads in the application's temporary directories. Monitor logs for attempts to access files outside expected directories. Check for any suspicious file operations in the DigiDoc4 installation folder or user data directories. Ensure the software version is not between 4.0.0 and 4.11.0.

Impact Analysis

If exploited, this vulnerability could allow attackers to read sensitive files on your system, potentially exposing confidential information like documents, credentials, or configuration files. It may also enable further attacks if combined with other vulnerabilities.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or sensitive data, violating GDPR's data protection requirements and HIPAA's safeguards for protected health information. Organizations using affected versions may face compliance breaches and legal consequences.

Mitigation Strategies

Update DigiDoc4 to version 4.11.0 or later immediately. If updating is not possible, restrict access to the application and its temporary directories. Disable unnecessary file operations and review user permissions. Monitor for any signs of exploitation and report suspicious activity to official support channels.

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