CVE-2026-47826 in BOSH CLI tool
Summary
by MITRE • 07/09/2026
The blobs.yml path key traversal vulnerability in the BOSH CLI tool allows an attacker to write arbitrary files and exfiltrate sensitive information. Affected versions: BOSH CLI tool versions prior to v7.10.4.
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Analysis
by VulDB Data Team • 07/09/2026
The blobs.yml path key traversal vulnerability represents a critical security flaw within the BOSH CLI tool that enables attackers to manipulate file system operations through maliciously crafted configuration inputs. This vulnerability specifically targets the handling of path keys in the blobs.yml configuration file, which is used by BOSH to manage blob storage and deployment artifacts. The issue arises from insufficient input validation and sanitization mechanisms that fail to properly constrain file system access patterns when processing user-supplied paths. Security researchers have identified this weakness as a significant risk to organizations relying on BOSH for cloud infrastructure management, particularly in environments where the CLI tool processes untrusted configuration data.
The technical exploitation of this vulnerability occurs through path traversal techniques that allow attackers to manipulate the blobs.yml file structure to write files outside of intended directories or read sensitive system information. When the BOSH CLI processes a maliciously constructed path key, it fails to properly validate whether the specified path remains within designated boundaries, enabling attackers to traverse directory structures and potentially overwrite critical system files or access confidential data. This flaw operates at the application level where configuration parsing logic does not adequately enforce path constraints, creating opportunities for arbitrary file operations that can compromise system integrity and data confidentiality. The vulnerability's impact is amplified by the fact that BOSH CLI tools are commonly used in automated deployment pipelines where configuration files may originate from untrusted sources.
The operational implications of this vulnerability extend beyond simple file system manipulation to encompass broader security risks including potential data exfiltration, system compromise, and unauthorized access to sensitive infrastructure components. Organizations using affected BOSH CLI versions face significant exposure when deploying applications that rely on blob storage functionality, as attackers can exploit this weakness to extract confidential information from deployment artifacts or inject malicious content into the build pipeline. The vulnerability's impact is particularly severe in cloud-native environments where BOSH serves as a core component of infrastructure automation, potentially enabling attackers to escalate privileges or gain unauthorized access to cloud resources. This flaw directly relates to CWE-22 Path Traversal and aligns with ATT&CK technique T1059 Command and Scripting Interpreter, as it enables malicious file operations through CLI tool interfaces.
Mitigation strategies for this vulnerability require immediate patching of affected BOSH CLI installations to version 7.10.4 or later, which includes proper path validation mechanisms that prevent directory traversal attacks. Organizations should implement comprehensive input validation policies for all configuration files processed by BOSH CLI tools, ensuring that path keys are properly sanitized and constrained to intended directories. Security teams must also establish monitoring procedures to detect anomalous file system operations that could indicate exploitation attempts, while implementing principle of least privilege controls to limit the impact of any successful attacks. Additional protective measures include regular security audits of deployment configurations, implementation of secure coding practices for CLI tool development, and establishment of automated scanning processes to identify potentially vulnerable configurations before they can be exploited in production environments.