Bug 2553465

Summary: CVE-2026-59889 jackson-bom: Jackson-databind: Privilege escalation via improper handling of @JsonUnwrapped properties [fedora-all]
Product: [Fedora] Fedora Reporter: Avinash Hanwate <ahanwate>
Component: jackson-bomAssignee: Marco Fargetta <mfargett>
Status: ON_QA --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: ckelley, edewata, epel-packagers-sig, mfargett
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["183c286b-04a1-4f9e-be95-5ee50a217b24"]}
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On:    
Bug Blocks: 2500653    

Description Avinash Hanwate 2026-10-15 14:27:14 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.18.0 until 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1, UnwrappedPropertyHandler.processUnwrapped() replays buffered JSON for a @JsonUnwrapped property and calls prop.deserializeAndSet() without a prop.visibleInView(ctxt.getActiveView()) guard, allowing a property annotated with both @JsonView and @JsonUnwrapped to be written from attacker JSON under a less-privileged active view. This issue is fixed in versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1.
Comment 1 Fedora Update System 2026-10-28 09:54:18 UTC 
FEDORA-2026-f20c4144a2 (jackson-bom-2.21.8-1.fc45, jackson-core-2.21.8-1.fc45, and 2 more) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-f20c4144a2
Comment 2 Fedora Update System 2026-10-29 02:00:43 UTC 
FEDORA-2026-f20c4144a2 has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-f20c4144a2`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-f20c4144a2

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.