CVE-2023-43496: Jenkins

High severity, CVSS 8.8. EPSS: 1% chance of exploitation in the next 30 days.

Jenkins 2.423 and earlier, LTS 2.414.1 and earlier creates a temporary file in the system temporary directory with the default permissions for newly created files when installing a plugin from a URL, potentially allowing attackers with access to the system temporary directory to replace the file before it is installed in Jenkins, potentially resulting in arbitrary code execution.

Affected products

• Jenkins Jenkins: before 2.414.2 (fixed in 2.414.2); before 2.424 (fixed in 2.424)

Published 2023-09-20. Last modified 2026-06-17.