CVE-2026-33004 in LoadNinja Plugin
Summary
by MITRE • 03/18/2026
Jenkins LoadNinja Plugin 2.1 and earlier does not mask LoadNinja API keys displayed on the job configuration form, increasing the potential for attackers to observe and capture them.
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Analysis
by VulDB Data Team • 03/24/2026
The vulnerability identified as CVE-2026-33004 affects the Jenkins LoadNinja Plugin version 2.1 and earlier, presenting a significant security risk through improper handling of sensitive authentication credentials. This issue manifests when API keys are displayed in plain text on job configuration forms, creating an exposure vector that directly contradicts fundamental security principles for credential management. The flaw represents a critical weakness in the plugin's user interface design, where sensitive information intended for secure handling is inadvertently exposed to unauthorized parties during routine operational tasks.
From a technical perspective, this vulnerability constitutes a failure in input sanitization and output encoding practices within the Jenkins plugin architecture. The plugin does not implement proper masking or obfuscation mechanisms for API keys when rendering configuration forms, allowing any user with access to the Jenkins interface to view these credentials in their entirety. This behavior directly violates security best practices outlined in CWE-200, which addresses information exposure, and CWE-521, which covers weak password requirements, as the exposed API keys can be used to authenticate and potentially compromise the LoadNinja service integration. The vulnerability exists at the application layer where user interface elements fail to properly handle sensitive data, creating an attack surface that can be exploited by both internal and external threat actors.
The operational impact of this vulnerability extends beyond simple credential exposure, as it enables unauthorized access to LoadNinja service capabilities and potentially allows attackers to perform actions within the LoadNinja environment that could affect system integrity and availability. An attacker who gains access to these unmasked API keys could leverage them to execute load testing operations, modify test configurations, or potentially access sensitive data within the LoadNinja service. The risk is particularly elevated in environments where Jenkins administrators may not implement strict access controls or where multiple users have administrative privileges. This vulnerability can be exploited through various attack vectors including credential theft, man-in-the-middle attacks, or social engineering attempts where attackers might observe credentials being entered or displayed on shared workstations.
Mitigation strategies for this vulnerability should focus on immediate remediation through plugin updates to versions that properly mask API keys in user interfaces. Organizations should implement comprehensive access control measures within Jenkins to limit who can view or modify job configurations containing sensitive information. The implementation of principle of least privilege should be enforced, ensuring that only authorized personnel have access to sensitive configuration parameters. Additionally, security awareness training should be provided to administrators regarding the importance of protecting API keys and the risks associated with displaying them in plain text. Organizations should also consider implementing additional monitoring and logging for configuration changes, as well as regular security audits to identify similar vulnerabilities in other plugins or system components. The remediation process should align with ATT&CK framework tactic TA0006 (Credential Access) and technique T1555.003 (Credentials from Password Stores) to ensure comprehensive protection against credential exposure threats.