Description
The Jenkins 2.73.1 and earlier, 2.83 and earlier remote API at /job/(job-name)/api contained information about upstream and downstream projects. This included information about tasks that the current user otherwise has no access to, e.g. due to lack of Item/Read permission. This has been fixed, and the API now only lists upstream and downstream projects that the current user has access to.
Remediation
References
https://jenkins.io/security/advisory/2017-10-11/
Related Vulnerabilities
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CVE-2020-6449 Vulnerability in maven package org.webjars.npm:electron
CVE-2023-32989 Vulnerability in maven package org.jenkins-ci.plugins:azure-vm-agents