Compliance Impact

The vulnerability allows attackers with permission to create or modify automations to execute arbitrary commands remotely, potentially leading to full system compromise, data exfiltration, and lateral movement within the infrastructure.

Such unauthorized access and data exfiltration risks can negatively impact compliance with common standards and regulations like GDPR and HIPAA, which require protection of sensitive data and prevention of unauthorized access.

Mitigating this vulnerability by disabling the Bash automation step, implementing command whitelisting, input sanitization, and other recommended security measures is essential to maintain compliance.

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Executive Summary

CVE-2026-25044 is a critical command injection vulnerability in the Bash automation step of Budibase, an open-source low-code platform. Prior to version 3.33.4, this step executes user-provided commands using Node.js's execSync function without proper sanitization or validation.

User input is processed through a function called processStringSync, which allows template interpolation. This means attackers can inject arbitrary shell commands by crafting malicious input, potentially leading to arbitrary command execution on the system.

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Impact Analysis

If exploited, this vulnerability allows attackers with permission to create or modify automations to execute arbitrary shell commands remotely. This can lead to full system compromise, including data exfiltration and lateral movement within the affected infrastructure.

The impact includes unauthorized remote code execution (RCE), which can severely affect the confidentiality, integrity, and availability of the system and its data.

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Detection Guidance

This vulnerability involves the execution of user-supplied commands in the Bash automation step of Budibase without proper sanitization, allowing arbitrary command execution.

To detect exploitation attempts or presence of this vulnerability, you can monitor for unusual or unauthorized command executions originating from Budibase automation steps.

Suggested detection methods include:

• Check Budibase automation configurations for usage of Bash automation steps that execute commands via execSync.
• Audit logs for suspicious commands containing shell metacharacters such as $(...), ;, |, or backticks that could indicate command injection.
• Use system process monitoring tools (e.g., ps, top) to identify unexpected processes spawned by Budibase.
• Example commands to search for suspicious command executions or processes:
• grep -rE '\$\(|;|\||`' /path/to/budibase/automation/configs
• ps aux | grep budibase
• auditctl rules to monitor execve syscalls from Budibase processes

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Mitigation Strategies

Immediate mitigation steps for this vulnerability include:

• Disable the Bash automation step in production environments to prevent execution of arbitrary commands.
• Upgrade Budibase to version 3.33.4 or later, where the vulnerability has been patched.
• Implement a whitelist of allowed commands and validate all command inputs rigorously.
• Sanitize user inputs by removing dangerous characters and command chaining operators.
• Use safer command execution methods such as Node.js's spawn instead of execSync.
• Employ restricted shells or sandboxing techniques to limit the impact of any command execution.
• Add rate limiting and monitoring for command executions to detect and prevent abuse.

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