CVE-2025-53665 is a vulnerability identified in the Jenkins Apica Loadtest Plugin version 1.10 and earlier. The core issue is that the plugin fails to mask Apica Loadtest LTP authentication tokens when they are displayed on the job configuration form within Jenkins. Authentication tokens are sensitive credentials that grant access to Apica Loadtest services, and exposing them in plaintext on the configuration interface increases the risk of unauthorized disclosure. An attacker with access to the Jenkins job configuration page could observe and capture these tokens, potentially allowing them to impersonate legitimate users or services, execute unauthorized load testing operations, or access sensitive performance testing data. This vulnerability does not require exploitation through code execution or complex attack vectors; rather, it leverages the visibility of sensitive tokens in the Jenkins UI. The affected versions include all versions up to 1.10, and no patch or mitigation link is currently provided. There are no known exploits in the wild at the time of publication, and the vulnerability was reserved and published in July 2025. The absence of a CVSS score indicates that the severity has not yet been formally assessed, but the nature of the vulnerability suggests a significant risk related to credential exposure within CI/CD environments.

For European organizations, this vulnerability poses a risk primarily to those using Jenkins as part of their continuous integration and deployment pipelines, particularly if they utilize the Apica Loadtest Plugin for performance testing. Exposure of authentication tokens could lead to unauthorized access to load testing services, potentially allowing attackers to manipulate performance tests, disrupt testing workflows, or gain further footholds within the network if the tokens provide broader access. This could result in compromised integrity of testing data, misallocation of resources, or even denial of service if load tests are manipulated maliciously. Organizations in sectors with stringent compliance requirements, such as finance, healthcare, and critical infrastructure, could face regulatory and reputational damage if such credentials are leaked and exploited. Additionally, since Jenkins is widely used across Europe, the risk is amplified in environments where access controls to Jenkins job configurations are insufficiently restrictive. The vulnerability could also be leveraged as a stepping stone for lateral movement within enterprise networks, especially if the exposed tokens have elevated privileges or are reused across systems.

To mitigate this vulnerability, European organizations should take immediate steps to restrict access to Jenkins job configuration pages to trusted personnel only, enforcing strict role-based access controls (RBAC). Administrators should audit existing Jenkins configurations to identify any exposure of Apica Loadtest authentication tokens and remove or rotate these tokens if they have been displayed in plaintext. Until an official patch is released, organizations should consider disabling the Apica Loadtest Plugin or replacing it with alternative tools that properly mask sensitive credentials. Implementing environment variable injection or credential binding plugins that securely handle secrets can reduce the risk of token exposure. Regularly monitoring Jenkins logs and access patterns for unusual activity related to job configuration views can help detect potential exploitation attempts. Finally, organizations should maintain an inventory of all Jenkins plugins and promptly apply updates once a patch addressing this vulnerability becomes available.