Cap-go capgo up to 12.128.11 Supabase PostgREST API resource consumption

Summaryinfo

A vulnerability, which was classified as problematic, was found in Cap-go capgo up to 12.128.11. Affected by this vulnerability is an unknown functionality of the component Supabase PostgREST API. Such manipulation leads to resource consumption. This vulnerability is listed as CVE-2026-56248. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Cap-go capgo up to 12.128.11. It has been rated as problematic. Affected by this issue is some unknown functionality of the component Supabase PostgREST API. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. CVE summarizes:

Cap-go capgo (capgo-backend) before 12.128.12 contains an unauthenticated denial-of-service vulnerability arising from the audit_logs table's Row-Level Security (RLS) policy when accessed via the Supabase PostgREST API. Because the PostgreSQL query planner executes costly logic before RLS rejection, unfiltered queries to the public.audit_logs endpoint using the public anon key consistently trigger statement timeouts (PostgREST error 57014). Under concurrency, this exhausts database resources and causes cascading HTTP 500 failures on unrelated endpoints (e.g. /orgs), resulting in an application-layer denial of service.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-56248 since 06/19/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 12.128.12 eliminates this vulnerability.

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Productinfo

Vendor

• Cap-go

Name

• capgo

Version

• 12.128.0
• 12.128.1
• 12.128.2
• 12.128.3
• 12.128.4
• 12.128.5
• 12.128.6
• 12.128.7
• 12.128.8
• 12.128.9
• 12.128.10
• 12.128.11

Website

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

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