---
title: "CVE-2026-100617: Cap-go - Broken Access Control"
description: "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."
url: https://panop.io/threat-heartbeat/CVE-2026-100617/
---

# 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 ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-100617)

## 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](https://cwe.mitre.org/data/definitions/862.html)

## 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

- [https://nvd.nist.gov/vuln/detail/CVE-2026-100617](https://nvd.nist.gov/vuln/detail/CVE-2026-100617)
- [https://github.com/Cap-go/capgo.app/security/advisories/GHSA-626c-p6fq-3whq](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-channel-permission-overrides](https://www.vulncheck.com/advisories/cap-go-capgo-app-authorization-bypass-via-channel-permission-overrides)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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