CVE-2026-79622 in adobe-xd-mcp
Summary
by MITRE • 08/25/2026
A weakness has been identified in dekdee adobe-xd-mcp 1.0.0. Impacted is an unknown function of the file src/parsers/xd-parser.ts of the component file-access-from-request Endpoint. Executing a manipulation of the argument outputFile/outputDir can lead to path traversal. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
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Analysis
by VulDB Data Team • 08/25/2026
The vulnerability identified in dekdee adobe-xd-mcp version 1.0.0 represents a critical security flaw within the file-access-from-request endpoint, specifically located in the src/parsers/xd-parser.ts module. This component is responsible for processing incoming requests and managing file operations based on user-supplied input. The core technical deficiency lies in the insufficient validation of arguments passed to functions that handle output destinations, namely outputFile and outputDir parameters. When these inputs are processed without rigorous sanitization or canonicalization checks, an attacker can inject directory traversal sequences such as dot-dot-slash characters into the path strings. This allows the application to resolve file paths outside of its intended working directory structure, effectively breaking out of the sandboxed environment designed by the developers.
This flaw is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory, which describes weaknesses where software does not properly neutralize special elements within a pathname that can cause the path to resolve to a location outside of the restricted directory. The operational impact of this vulnerability is severe because it enables remote code execution scenarios or unauthorized data access depending on how the server handles the written files. An attacker who successfully exploits this path traversal weakness can write malicious scripts, configuration files, or other executable content into sensitive system directories that are accessible to the web service process. This could lead to full compromise of the underlying host operating system if the application runs with elevated privileges or if it writes to locations like /etc/cron.d on Linux systems or startup folders on Windows environments.
The threat landscape is further exacerbated by the fact that this vulnerability can be exploited remotely over a network connection without requiring prior authentication in many configurations, although specific deployment contexts may vary. The availability of public exploits significantly lowers the barrier for entry, allowing less sophisticated attackers to leverage existing tooling against vulnerable instances. This situation aligns with ATT&CK technique T1059: Command and Scripting Interpreter, as successful exploitation often involves executing arbitrary commands on the target system through uploaded files or by manipulating configuration files that are subsequently interpreted by other processes. The lack of a response from the project maintainers despite early notification indicates a potential gap in security maintenance practices for this specific open-source component, leaving users exposed to known risks without timely patches.
Mitigation strategies must focus on immediate defensive measures since an official patch is not yet available. Administrators should implement strict input validation at the application layer by whitelisting allowed characters and rejecting any path segments containing relative navigation sequences. Additionally, deploying a Web Application Firewall with rules specifically tuned for directory traversal patterns can provide a temporary buffer against exploitation. It is also critical to ensure that the service runs under a restricted user account with minimal permissions, limiting the potential damage if an attacker manages to write files outside the intended directory. Regular auditing of file system access logs and implementing strict chroot or containerization boundaries can further reduce the attack surface by isolating the application from sensitive parts of the host operating system until a permanent code fix is released by the developers.