CVE-2025-47887 is a medium-severity vulnerability identified in the Jenkins Cadence vManager Plugin version 4.0.1-286.v9e25a_740b_a_48 and earlier. The core issue stems from missing permission checks within the plugin, specifically allowing users who possess Overall/Read permissions in Jenkins to exploit the vulnerability. These users can leverage the flaw to make the Jenkins server connect to an attacker-specified URL using attacker-supplied credentials (username and password). This behavior is indicative of a server-side request forgery (SSRF)-like condition combined with improper authorization controls (CWE-862). The vulnerability does not require user interaction beyond the attacker having Overall/Read permission, which is a relatively low privilege level in Jenkins environments. The CVSS v3.1 base score is 4.3, reflecting a medium severity with network attack vector, low attack complexity, and privileges required at the read level. The impact primarily affects the integrity of the system, as attackers can potentially manipulate or influence external connections initiated by Jenkins, which may lead to further exploitation or data leakage depending on the external systems targeted. No known exploits are currently reported in the wild, and no patches have been linked yet. This vulnerability highlights a critical gap in access control enforcement within the plugin, allowing attackers to abuse legitimate Jenkins functionality to perform unauthorized actions.

For European organizations, this vulnerability poses a moderate risk, especially for those heavily reliant on Jenkins for continuous integration and deployment pipelines. Attackers with read-level access could exploit this flaw to cause Jenkins to connect to malicious or attacker-controlled endpoints, potentially leading to indirect compromise of internal resources or leakage of sensitive information through these connections. Organizations in sectors with stringent regulatory requirements (e.g., finance, healthcare, critical infrastructure) may face compliance risks if such unauthorized connections lead to data breaches or operational disruptions. Moreover, the ability to specify credentials for these connections could facilitate lateral movement or escalation in complex environments. While the vulnerability does not directly allow code execution or system takeover, the manipulation of network connections can be a stepping stone for more sophisticated attacks. The absence of user interaction and the low privilege requirement increase the likelihood of exploitation in environments where many users have read access, making it a relevant concern for European enterprises using Jenkins.

European organizations should immediately audit their Jenkins environments to identify instances of the Cadence vManager Plugin version 4.0.1-286.v9e25a_740b_a_48 or earlier. Until an official patch is released, organizations should restrict Overall/Read permissions to trusted users only, minimizing the attack surface. Implement network-level controls to restrict Jenkins servers from making outbound connections to untrusted or external networks, effectively limiting the impact of any forced connections. Monitoring and alerting on unusual outbound connection attempts from Jenkins servers can help detect exploitation attempts early. Additionally, organizations should review and harden plugin configurations, disable or remove unnecessary plugins, and consider isolating Jenkins instances within segmented network zones. Once a patch becomes available, prompt application of updates is critical. Finally, conducting regular permission reviews and adopting the principle of least privilege for Jenkins users will reduce the risk posed by this and similar vulnerabilities.