Token Impersonation Vulnerability in Jenkins OpenID Connect Provider Plugin

CVE-2025-47884

What is CVE-2025-47884?

CVE-2025-47884 is a vulnerability in the Jenkins OpenID Connect Provider Plugin, specifically affecting versions 96.vee8ed882ec4d and earlier. Jenkins is a widely used open-source automation server that supports continuous integration and continuous delivery (CI/CD) processes in software development. This vulnerability arises from the way build ID Tokens are generated, as it allows environment variable values to be overridden in certain contexts. As a result, an attacker with the ability to configure jobs within Jenkins can forge a build ID Token that mimics a trusted job. Consequently, this can lead to unauthorized access to external services, exposing organizations to significant security risks.

Potential impact of CVE-2025-47884

1. Unauthorized Access: The most immediate concern is that attackers can impersonate trusted jobs, potentially accessing sensitive data and external systems without authorization. This breach could lead to significant data loss or exposure.

2. Compromised External Services: With the ability to generate misleading tokens, attackers might exploit linked external services that rely on Jenkins for authentication, leading to broader security breaches beyond the Jenkins environment.

3. Impact on CI/CD Processes: This vulnerability could undermine the integrity of the CI/CD pipelines by allowing malicious alterations in the build or deployment processes. Such manipulations could result in deploying compromised code into production environments, posing long-term risks to organizational stability and security.

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