Information disclosure in Cap-Go Capgo
CVE-2026-56235
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 []).
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (32.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Cap-Go Capgo — versions 0, 12.128.2
Weakness classification (CWE)
References
- github.com/Cap-go/capgo/security/advisories/GHSA-gfpq-vphf-6gcm (vendor-advisory)
- www.vulncheck.com/advisories/capgo-unauthenticated-cross-tenant-metrics-disclos… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-56235?
- CVE-2026-56235 is a medium-severity vulnerability in Cap-Go Capgo, classified under Information Disclosure. CVSS score: 5.3/10. Published 2026-06-20.
- How severe is CVE-2026-56235?
- Medium severity. CVSS v3 base score is 5.3 out of 10.