CVE-2026-56328

Summary

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.

Affected Software

Weaknesses

• CWE-670: Always-Incorrect Control Flow Implementation

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

Additional References

• https://github.com/Cap-go/capgo/security/advisories/GHSA-3cmp-pm5x-8464

References

• https://github.com/Cap-go/capgo/security/advisories/GHSA-3cmp-pm5x-8464
• https://www.vulncheck.com/advisories/capgo-integrity-issue-in-release-routing-via-multiple-public-channels

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