Orkes Conductor is widely used in enterprise environments for orchestrating microservice-based workflows. It facilitates business process automation and is known for its scalability and reliability. Organizations use Conductor to automate tasks, manage state in distributed systems, and handle complex workflows effortlessly. It's a tool specifically designed for developers and DevOps teams to streamline operations and improve efficiency. With its support for popular scripting languages and flexible architecture, Orkes Conductor integrates seamlessly with various platforms and services. This makes it a crucial component in modern, cloud-native application ecosystems.
Remote Code Execution (RCE) is a critical vulnerability that allows attackers to remotely execute arbitrary code on a vulnerable system. In Orkes Conductor, an RCE vulnerability can be exploited to execute system-level commands, potentially leading to a full system compromise. Unauthenticated attackers can leverage weaknesses in script evaluators to hijack system resources. This vulnerability is particularly severe as it doesn't require authentication, allowing external actors easy access to execute harmful operations. Addressing this vulnerability is crucial to protect against unauthorized access and potential data breaches.
The specific vulnerability in Orkes Conductor involves the INLINE workflow task that evaluates a user-supplied JavaScript expression within a GraalVM context. By exploiting the GraalVM script evaluators configured with HostAccess.ALL, attackers can access java.lang.Runtime and execute arbitrary commands. The attack surfaces include endpoints that manipulate workflow metadata and execute workflows with crafted JavaScript commands. Proper sanitization of input and restricted access to script evaluators are essential to mitigate this risk. Until the fix in 3.30.2, the system remains vulnerable to potentially devastating RCE attacks.
When exploited, this vulnerability allows an attacker to gain control of the Conductor server, execute arbitrary commands, and potentially access sensitive data. This can result in data breaches, service disruption, and unauthorized access to critical infrastructure. Exploitation could lead to the spread of malware, data exfiltration, or further attacks within the network. System integrity and confidentiality are compromised, posing significant risks to business continuity and reputation. Effective remediation strategies must be enacted promptly to prevent exploitation and secure vulnerable systems.
REFERENCES
- https://www.vulncheck.com/advisories/orkes-conductor-unauthenticated-rce-via-graalvm-script-evaluators
- https://github.com/conductor-oss/conductor/commit/c691e35e768caeb802c9f06ecdd9674c80081af1
- https://github.com/conductor-oss/conductor/releases/tag/v3.30.2
- https://nvd.nist.gov/vuln/detail/CVE-2026-58138
- https://github.com/BiiTts/CVE-2026-58138-Conductor-Unauth-RCE
- Upgrade to Orkes Conductor version 3.30.2 or later to mitigate the RCE vulnerability.
- Regularly audit and monitor script evaluator configurations for unauthorized changes.
- Implement strict input validation and sanitization for JavaScript executed in workflows.
- Restrict access to critical endpoints like workflow metadata APIs to trusted networks only.
- Continuously monitor network traffic for unusual patterns or signs of exploitation.
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