AIKIDO-2026-446154
jenkins-core is vulnerable to Deserialization of Untrusted Data
88
High Risk
This Affects:
jenkins-coreTL;DR
Transient fields cannot be excluded from deserialization during configuration updates. An attacker who can submit configuration updates can set transient field values that will be deserialized, with impact depending on how those fields are used. The fix adds a way to mark transient fields as non-deserializable so those values are ignored.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and users can submit configuration updates that are deserialized by Jenkins.
Background info
jenkins-core is vulnerable to Deserialization of Untrusted Data in versions 0.0.1 - 2.568.2 and 2.569 - 2.579.
How to fix this
Upgrade the org.jenkins-ci.main:jenkins-core library to the patch version.
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