CVE-2026-10073: DreamMaker Path Traversal Vulnerability

CVE-2026-10073 Overview

CVE-2026-10073 is an arbitrary file read vulnerability in DreamMaker, developed by Interinfo. The flaw stems from improper handling of relative path sequences [CWE-23], enabling attackers to traverse the file system and download arbitrary files. According to the TW-CERT advisory, unauthenticated attackers can exploit the issue to retrieve sensitive system files from affected installations. The vulnerability is tracked with a CVSS 4.0 base score of 8.7.

Critical Impact
Unauthenticated attackers can read arbitrary files from the host system, exposing credentials, configuration data, and other sensitive content.

Affected Products

DreamMaker by Interinfo

Discovery Timeline

2026-05-29 - CVE-2026-10073 published to NVD
2026-05-29 - Last updated in NVD database

Technical Details for CVE-2026-10073

Vulnerability Analysis

The vulnerability is classified as Relative Path Traversal under [CWE-23]. DreamMaker exposes a file download function that fails to canonicalize or validate user-supplied path components. Attackers supply traversal sequences such as ../ to escape the intended directory and access files outside the application root.

The TW-CERT advisory states that no authentication is required to invoke the affected functionality. This expands the attack surface to any actor with network reachability to the service. Successful exploitation discloses file contents that may include credentials, application configuration, or operating system files.

Root Cause

The root cause is missing input validation on the file path parameter. The application accepts user-controlled path data and resolves it against a base directory without rejecting parent-directory references. Because the resolution occurs before access control checks, the application returns content from arbitrary paths the service account can read.

Attack Vector

The attack is delivered over the network against the DreamMaker file download endpoint. An attacker submits a crafted request containing relative path sequences pointing at a target file outside the intended directory. The server resolves the manipulated path and returns the file contents in the HTTP response. No authentication, user interaction, or elevated privileges are required.

No verified public proof-of-concept code has been published. Refer to the TW-CERT Advisory for vendor-supplied technical details.

Detection Methods for CVE-2026-10073

Indicators of Compromise

HTTP requests to DreamMaker download endpoints containing ../, ..\, or URL-encoded variants such as %2e%2e%2f
Outbound responses transferring files from outside the expected application directory
Repeated download requests referencing system paths such as /etc/passwd, C:\Windows\win.ini, or application configuration files

Detection Strategies

Inspect web server and application logs for path traversal patterns in query strings and POST bodies targeting DreamMaker services
Deploy WAF or IDS signatures that flag encoded and double-encoded traversal sequences against the application endpoints
Correlate anomalous file-read activity by the DreamMaker service account with inbound HTTP requests on the host

Monitoring Recommendations

Enable verbose access logging on DreamMaker and forward to a centralized log platform for retention and search
Alert on spikes in 200-OK responses containing unusually large or sensitive file payloads from the application
Baseline normal file access patterns for the service and trigger on deviations such as reads from system directories

How to Mitigate CVE-2026-10073

Immediate Actions Required

Restrict network exposure of DreamMaker by placing it behind firewall rules or a VPN until a patch is applied
Review access logs for traversal patterns and assume compromise of any sensitive files readable by the service account
Rotate credentials and secrets that may have been stored in files accessible to the DreamMaker process

Patch Information

Consult the TW-CERT Advisory and TW-CERT Security Notice for vendor-supplied patch availability and fixed version information. Apply the vendor-provided update from Interinfo as soon as it is released.

Workarounds

Block requests containing ../, ..\, and URL-encoded traversal sequences at a reverse proxy or WAF in front of DreamMaker
Restrict file system permissions for the DreamMaker service account so it can only read files within its required directories
Disable or firewall the file download functionality if it is not required for business operations

bash

# Example reverse proxy rule to block traversal sequences
location /dreammaker/ {
    if ($request_uri ~* "(\.\./|\.\.\\|%2e%2e%2f|%2e%2e/|\.\.%2f|%2e%2e%5c)") {
        return 403;
    }
    proxy_pass http://dreammaker_backend;
}