Capgo - Integrity Issue in Release Routing via Multiple Public Channels | Advisories

Advisories

Capgo - Integrity Issue in Release Routing via Multiple Public Channels

severity: medium
date: 6/30/2026
Affecting: Capgo >= 0, < 12.128.2
CVE: CVE-2026-56328
CWE: CWE-670 Always-Incorrect Control Flow Implementation
CVSS: 7.1
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
References: GitHub Security Advisory (GHSA-3cmp-pm5x-8464)
Credit: Judel777
Description: Capgo before 12.128.2 allows multiple public channels for the same app and platform to coexist simultaneously, while unnamed /updates requests without defaultChannel implicitly resolve to a single hidden winner channel. An authorized app or channel manager can create ambiguous default update state and silently influence which bundle unnamed clients receive, breaking release routing integrity and predictability.

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