Auth bypass in Aaif-Goose Goose
CVE-2026-109561
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.
Vulnerability class: Broken Access Control
Published .
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/aaif-goose/goose/pull/10528 (issue-tracking, patch)
- github.com/aaif-goose/goose/commit/b0f4e2a0f1a5507aa0a0fbe73d0b5c77a3e86845 (patch)
- github.com/aaif-goose/goose/blob/v1.43.0/crates/goose/src/permission/permission… (technical-description)
- github.com/aaif-goose/goose/releases/tag/v1.44.0 (release-notes)
- github.com/aaif-goose/goose (product)
- www.vulncheck.com/advisories/goose-from-1.28.0-before-1.44.0-manual-approval-by… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-109561?
- CVE-2026-109561 is a medium-severity vulnerability in Aaif-Goose Goose, classified under Incorrect Authorization. CVSS score: 4.2/10. Published 2026-10-12.
- How severe is CVE-2026-109561?
- Medium severity. CVSS v3 base score is 4.2 out of 10.