CVE-2026-0637 in API Control Plane
Summary
by MITRE • 08/06/2026
When an Event Publisher output adapter is configured with irrelevant properties, the affected products log these properties. This logging occurs without sufficient validation or sanitization of the property values.
A malicious actor with access to the 'wso2carbon' log files could retrieve sensitive information, such as user credentials or other confidential data, that was inadvertently logged due to misconfiguration, potentially leading to unauthorized access.
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Analysis
by VulDB Data Team • 08/06/2026
This vulnerability represents a critical logging security flaw that arises from insufficient input validation within WSO2 product configurations. The issue manifests when Event Publisher output adapters are configured with irrelevant properties that are subsequently logged without proper sanitization or validation measures. This configuration oversight creates an attack vector where sensitive information becomes inadvertently exposed through log files, fundamentally undermining the security posture of affected systems.
The technical implementation flaw stems from inadequate parameter validation mechanisms within the logging subsystem of WSO2 products. When misconfigured adapters process irrelevant properties, these values are written to the wso2carbon log files without sanitization, creating a persistent exposure window where confidential data such as user credentials, authentication tokens, or other sensitive information may be captured in plaintext format. This vulnerability aligns with CWE-117, which addresses improper output neutralization for logs, and represents a classic example of insecure logging practices that violate fundamental security principles.
The operational impact of this vulnerability extends beyond simple information disclosure to encompass potential privilege escalation and unauthorized access scenarios. A malicious actor who gains read access to the wso2carbon log files can extract sensitive data that was inadvertently logged during system operations, potentially enabling them to compromise user accounts, escalate privileges, or establish persistent access to the affected systems. This threat vector is particularly concerning because it leverages legitimate system logging mechanisms to exfiltrate confidential information, making detection more challenging and exploitation more stealthy.
Mitigation strategies should focus on implementing comprehensive input validation and sanitization protocols for all adapter configurations, ensuring that no sensitive data flows through logging mechanisms without proper obfuscation or removal. Organizations must conduct thorough configuration reviews and implement automated scanning tools to identify misconfigured adapters before they can be exploited. The remediation process should include mandatory log file access controls, regular security assessments of logging configurations, and implementation of centralized log management solutions with built-in sanitization capabilities. Additionally, system administrators should establish monitoring protocols to detect anomalous log file access patterns that might indicate exploitation attempts, aligning with ATT&CK technique T1070.002 for Indicator Removal on Host and T1562.001 for Disable or Modify Tools, which are relevant defensive measures against this specific threat vector.