CVE-2023-27903: Jenkins

Medium severity, CVSS 4.4. EPSS: 0.2% chance of exploitation in the next 30 days.

Jenkins 2.393 and earlier, LTS 2.375.3 and earlier creates a temporary file in the default temporary directory with the default permissions for newly created files when uploading a file parameter through the CLI, potentially allowing attackers with access to the Jenkins controller file system to read and write the file before it is used.

Affected products

• Jenkins Jenkins: before 2.375.4 (fixed in 2.375.4); before 2.394 (fixed in 2.394)

Published 2023-03-10. Last modified 2026-06-17.