CVE-2026-56235
MEDIUMCapgo - Unauthenticated Cross-Tenant Metrics Disclosure via RPC Functions
Title source: cnaDescription
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