{"id":"CVE-2026-100617","published":"2026-09-26T14:16:42.467","lastModified":"2026-09-28T20:51:05.473","description":"Cap-go capgo.app fails to validate that principals in channel_permission_overrides belong to the organization, allowing authenticated app/org admins to grant channel permissions to non-member users. Attackers with admin privileges can insert override rows with arbitrary external user UUIDs to grant channel-scoped permissions such as channel.promote_bundle to users outside the organization.","cvssScore":8.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-862"],"vendors":[],"products":[],"references":[{"url":"https://github.com/Cap-go/capgo.app/security/advisories/GHSA-626c-p6fq-3whq","tags":[]},{"url":"https://www.vulncheck.com/advisories/cap-go-capgo-app-authorization-bypass-via-channel-permission-overrides","tags":[]}],"exploitRefs":[{"url":"https://github.com/Cap-go/capgo.app/security/advisories/GHSA-626c-p6fq-3whq","tags":[]}],"hasPoc":true,"ai":{"summary":"The flaw allows authenticated app/org admins to grant channel permissions to non-member users, enabling attackers with admin privileges to bypass organization membership checks and grant unauthorized access.","exploitability":"Exploitation is relatively straightforward for attackers with admin privileges, as they can insert override rows with arbitrary external user UUIDs.","blast_radius":"If exploited, this flaw could lead to unauthorized access and control over sensitive channels, potentially compromising the integrity and confidentiality of the application and its data.","remediation":"Upgrade to the latest version of Cap-go capgo.app, specifically version 2.590 or later, as published by the vendor.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["auth-bypass","permissions","web"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-09-30T09:02:31.286Z"}}