CVE-2026-100617 Cap-go - Broken Access Control

Cap-go capgo.app contains a broken access control vulnerability caused by failure to validate principals in channel_permission_overrides, letting authenticated app/org admins grant channel permissions to non-member users, exploit requires admin privileges.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.30% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Broken Access Control
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
26 September 2026
Updated
15 October 2026
Weakness
CWE-862

Vendor fix

Update to the latest version with proper validation of principals in channel_permission_overrides.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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