Bug 2549958 (CVE-2026-109561)

Summary: CVE-2026-109561 goose: goose: Authorization bypass via uncleared read-only tool annotations
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in goose. An authorization bypass vulnerability allows tools to run without required user confirmation even when manual approval mode is selected. This occurs because read-only tool annotations from previous sessions are not properly cleared when switching approval modes. Consequently, an attacker could leverage prompt injection to execute tools automatically, bypassing the intended security controls.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-10-12 21:03:54 UTC
goose from 1.28.0 before 1.44.0 contains an authorization bypass vulnerability that allows tools to run without user approval in Manual Approval mode because persisted read-only annotations are never cleared by update_goose_mode. After a session uses Smart Approval mode, prompt-injected calls to tools annotated readOnlyHint: true execute without prompting, bypassing the user's selected approval mode in PermissionInspector::inspect.