Vulnerability 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 Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/Cap-go/capgo.app/security/advisories/GHSA-626c-p6fq-3whq
- https://www.vulncheck.com/advisories/cap-go-capgo-app-authorization-bypass-via-c
- https://github.com/Cap-go/capgo.app/security/advisories/GHSA-626c-p6fq-3whq
FAQ
What is CVE-2026-100617?
CVE-2026-100617 is a vulnerability with a CVSS score of 8.8 (HIGH). 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. A...
How severe is CVE-2026-100617?
CVE-2026-100617 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-100617?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.