# CVE-2026-56335: Capgo authorization bypass in channel configuration via PostgREST

Source: https://junglewise.ai/threats/cve-2026-56335-capgo-authorization-bypass-in-channel-configuration-via-postgrest  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-10. Updated: 2026-07-10  
License: CC BY 4.0 with a link back

CVE-2026-56335 · Severity: medium · CVSS 6.5 · Published 2026-07-10

Capgo, a platform for managing app updates and deployments, contained a security flaw where certain API keys could bypass intended restrictions. An attacker with a standard 'write' API key could modify sensitive channel settings that were supposed to be permanent or protected, such as whether a channel is public or if it allows emulators. This could lead to unauthorized changes in how software updates are distributed to users or the exposure of private development channels.

Technologies: [Capgo](https://junglewise.ai/threats/technologies/capgo). Vendors: [Capgo](https://junglewise.ai/threats/vendors/capgo).

## Quick answers

**Is CVE-2026-56335 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-56335 being exploited in the wild.

**How severe is CVE-2026-56335?** Medium severity, with a CVSS score of 6.5, published 10 July 2026.

**Which products and versions are affected?** Capgo < 12.128.2.

**Is there a fix for CVE-2026-56335?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-56335 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-56335?** Check whether you run Capgo at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An authorization bypass exists in Capgo versions prior to 12.128.2 due to a flaw in the 'public.noupdate()' immutability trigger. The trigger, designed to prevent modifications to sensitive channel fields, contains a logic error that returns early (skipping checks) if 'auth.uid()' is NULL. Because API-key authenticated requests via PostgREST result in a NULL authentication ID, the immutability enforcement is bypassed. Simultaneously, the Row Level Security (RLS) UPDATE policy on the 'public.channels' table permits write-scoped API keys to perform updates. An authenticated attacker with a write-scoped API key can exploit this to modify protected attributes such as 'public', 'allow_emulator', and other security flags. The issue is resolved in version 12.128.2.

## Affected products

- Capgo Capgo < 12.128.2

## Timeline

- 2026-05-07: advisory: Vendor advisory published on GitHub
- 2026-07-10: disclosed: CVE published to NVD

## References

- [https://github.com/Cap-go/capgo/security/advisories/GHSA-ph9c-vwjq-pqhj](https://github.com/Cap-go/capgo/security/advisories/GHSA-ph9c-vwjq-pqhj)
- [https://www.vulncheck.com/advisories/capgo-channel-configuration-mutation-via-write-scoped-api-keys](https://www.vulncheck.com/advisories/capgo-channel-configuration-mutation-via-write-scoped-api-keys)

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