CVE-2026-84651mediumCWE-284

CVE-2026-84651: medium-severity vulnerability in Jenkins

Published

Follow this CVE+ Monitor Jenkins

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.3epss 0.5%
In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, the REST API and CLI endpoints for updating agent configuration do not prevent a submitted configuration from overwriting a different agent by specifying that agent's name in the submitted XML document, allowing attackers with Agent/Configure permission on one agent to take over a different agent, gaining control of its configuration and obtaining access to its inbound agent secret and environment variables.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Affected products
Jenkins Project · Jenkins
Related CVEs — Jenkins

In the same product, most dangerous first.

CVE-2024-23897CRITICALCVE-2024-23897EPSS 100.0%KEVCVE-2024-23898HIGHCVE-2024-23898EPSS 67.2%CVE-2026-53435HIGHCVE-2026-53435EPSS 53.1%CVE-2024-43044HIGHCVE-2024-43044EPSS 28.8%CVE-2025-59474MEDIUMCVE-2025-59474EPSS 5.0%CVE-2023-43494—CVE-2023-43494EPSS 3.9%