CVE-2026-56235

MEDIUM

Capgo - Unauthenticated Cross-Tenant Metrics Disclosure via RPC Functions

Title source: cna
STIX 2.1

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 (2)

Core 2
Core References
Vendor Advisory vendor-advisory
GHSA Advisory GHSA-gfpq-vphf-6gcm
https://github.com/Cap-go/capgo/security/advisories/GHSA-gfpq-vphf-6gcm
Third Party Advisory third-party-advisory
VulnCheck Advisory: Capgo - Unauthenticated Cross-Tenant Metrics Disclosure via RPC Functions
https://www.vulncheck.com/advisories/capgo-unauthenticated-cross-tenant-metrics-disclosure-via-rpc-functions

Scores

CVSS v3 5.3
EPSS 0.0027
EPSS Percentile 19.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-200
Status published
Products (2)
Cap-go/capgo < 12.128.2
Cap-go/capgo 12.128.2
Published Jun 20, 2026
Tracked Since Jun 20, 2026