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CVE-2026-100617

8.8 HIGHpublic exploit available

Published 2026-09-26 · Updated 2026-09-28

AI risk analysis

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.
Detection
No reliable host or network indicator is derivable from the published description.
Prioritized remediation
Upgrade to the latest version of Cap-go capgo.app, specifically version 2.590 or later, as published by the vendor.
auth-bypasspermissionsweb

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD 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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-862

Public exploit & PoC references

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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