Cap-go capgo up to 12.128.1 PostgREST RPC get_total_metrics org_id information disclosure

Summaryinfo

A vulnerability was found in Cap-go capgo up to 12.128.1 and classified as problematic. The impacted element is the function get_total_metrics of the file /rest/v1/rpc/get_total_metrics of the component PostgREST RPC Handler. Such manipulation of the argument org_id leads to information disclosure. This vulnerability is documented as CVE-2026-56284. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Cap-go capgo up to 12.128.1. It has been rated as problematic. Affected by this issue is the function get_total_metrics of the file /rest/v1/rpc/get_total_metrics of the component PostgREST RPC Handler. The manipulation of the argument org_id with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

Capgo (Cap-go/capgo) before 12.128.2 contains an information disclosure vulnerability in the Supabase PostgREST RPC function public.get_total_metrics(org_id), which is callable by the anon role using only the public sb_publishable_* key. An unauthenticated attacker can probe organization existence and leak sensitive usage metrics including MAU, bandwidth, and install counts by sending POST requests to /rest/v1/rpc/get_total_metrics with valid organization UUIDs.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-56284 since 06/20/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

Upgrading to version 12.128.2 eliminates this vulnerability.

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Productinfo

Vendor

• Cap-go

Name

• capgo

Version

• 12.128.0
• 12.128.1

Website

• Product: https://github.com/Cap-go/capgo/

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