CVE-2025-64318 identifies a security vulnerability in Salesforce Mulesoft Anypoint Code Builder versions before 1.11.6, categorized under CWE-1427: Improper Neutralization of Input Used for LLM Prompting. The vulnerability arises because the application fails to adequately sanitize or neutralize user-supplied input before incorporating it into prompts for a large language model (LLM) integrated within the Code Builder environment. This improper input handling allows an attacker to inject malicious content that can manipulate writable configuration files within the system. Such manipulation can alter the behavior of the Code Builder environment, potentially leading to unauthorized changes in system configuration, which may affect the integrity and availability of the development and deployment pipelines. The vulnerability does not currently have a CVSS score and no public exploits have been reported, but the risk stems from the ability to influence critical configuration files through crafted input. The issue affects all versions prior to 1.11.6, and the vendor Salesforce has reserved the CVE and published the vulnerability details. The attack vector likely requires some level of access to the Code Builder environment, but the exact authentication requirements are not specified. Because Mulesoft Anypoint Code Builder is widely used for API development and integration, exploitation could disrupt business-critical workflows and introduce further security risks if configuration files control security policies or deployment parameters.

For European organizations, the impact of CVE-2025-64318 can be significant given the widespread use of Salesforce Mulesoft Anypoint Code Builder in enterprise API development and integration projects. Unauthorized manipulation of writable configuration files could lead to altered deployment configurations, introduction of insecure settings, or disruption of automated workflows, potentially causing downtime or degraded service availability. Confidentiality might be indirectly affected if configuration changes expose sensitive data or weaken access controls. Integrity is directly at risk due to the possibility of unauthorized configuration modifications. Availability could be impacted if critical services fail or behave unpredictably due to corrupted configurations. Given the integration-centric nature of Mulesoft, downstream systems and applications could also be affected, amplifying the impact. European organizations in finance, manufacturing, and public sectors relying on Mulesoft for digital transformation and API management are particularly vulnerable to operational disruptions and compliance risks if exploited.

To mitigate CVE-2025-64318, European organizations should immediately upgrade Mulesoft Anypoint Code Builder to version 1.11.6 or later where the vulnerability is addressed. In addition to patching, organizations should implement strict input validation and sanitization controls on any user inputs that interact with LLM prompting or configuration management features. Access to the Code Builder environment should be tightly controlled using role-based access controls (RBAC) and multi-factor authentication (MFA) to reduce the risk of unauthorized exploitation. Regular integrity checks and monitoring of configuration files should be established to detect unauthorized changes promptly. Security teams should review deployment pipelines and API configurations for anomalies and enforce least privilege principles on all related systems. Finally, organizations should maintain up-to-date incident response plans that include scenarios involving configuration tampering and ensure staff are trained to recognize and respond to suspicious activity related to development environments.