What is GHSA-g938-xgc8-q827?

GHSA-g938-xgc8-q827 is a security advisory published by GitHub Security Advisories with Medium severity. Cap-go capgo before 12.128.2 contains an authorization bypass in several Supabase PostgREST RPC...

Which CVE IDs does GHSA-g938-xgc8-q827 cover?

GHSA-g938-xgc8-q827 covers the following CVE IDs: CVE-2026-56235. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-g938-xgc8-q827?

GHSA-g938-xgc8-q827 has a CVSS v3 base score of 5.3, published by GitHub Security Advisories.

GHSA-g938-xgc8-q827MediumCVSS 5.3

Cap-go capgo before 12.128.2 contains an authorization bypass in several Supabase PostgREST RPC...

Vendor

GitHub Security Advisories

Published

June 20, 2026

Last Modified

June 20, 2026

🔗 CVE IDs covered (1)

CVE-2026-56235 →

📋 Description

Cap-go capgo before 12.128.2 contains an authorization bypass in several Supabase PostgREST RPC functions (get_app_metrics, get_global_metrics, get_total_metrics) that are granted to the anon role without enforcing org membership or permission checks. An unauthenticated attacker using only the public Supabase API key (sb_publishable_*) can query arbitrary org_id values to disclose cross-tenant usage telemetry (MAU, bandwidth, installs, gets), enumerate app IDs for a target org, and determine org existence via an oracle (valid org returns metrics, invalid returns []).

🔗 References (4)

https://github.com/Cap-go/capgo/security/advisories/GHSA-gfpq-vphf-6gcm
https://nvd.nist.gov/vuln/detail/CVE-2026-56235
https://www.vulncheck.com/advisories/capgo-unauthenticated-cross-tenant-metrics-disclosure-via-rpc-functions
https://github.com/advisories/GHSA-g938-xgc8-q827