Bug 2527585 (CVE-2026-84655) - CVE-2026-84655 jenkins: Jenkins: Information injection via unescaped map keys in REST API
Summary: CVE-2026-84655 jenkins: Jenkins: Information injection via unescaped map keys...
Keywords:
Status: NEW
Alias: CVE-2026-84655
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-02 15:59 UTC by OSIDB Bzimport
Modified: 2026-09-28 06:00 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-09-02 15:59:38 UTC 
Jenkins 2.579 and earlier, LTS 2.568.2 and earlier does not escape map keys when serializing objects as JSON and Python through its REST API, allowing attackers able to control map property names to inject arbitrary fields into JSON and Python API responses.
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