AIKIDO-2026-132243
jenkins-core is vulnerable to Deserialization of Untrusted Data
88
High Risk
This Affects:
jenkins-coreTL;DR
Stapler form data binding does not restrict instantiated object types to those compatible with the expected field type. An attacker with Overall/Read permission can instantiate configuration-related types that the field was not intended to accept. The fix limits form binding to types compatible with the declared field type.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and users with Overall/Read permission can submit form data that Stapler binds into configuration objects.
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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