Auth bypass in Capgo
CVE-2026-56311
Capgo before 12.128.2 contains an authorization bypass vulnerability in the public.get_current_plan_max_org RPC function that allows unauthenticated attackers to retrieve arbitrary organization plan limits. Attackers can call the RPC endpoint with any organization UUID using only the public Supabase key to disclose billing information including MAU, bandwidth, storage, and build time limits for any organization.
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 (27.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.9% 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
- Capgo — versions 0, 12.128.2
Weakness classification (CWE)
References
- github.com/Cap-go/capgo/security/advisories/GHSA-v3jp-r95g-x4mm (vendor-advisory)
- www.vulncheck.com/advisories/capgo-unauthenticated-cross-tenant-disclosure-via-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-56311?
- CVE-2026-56311 is a medium-severity vulnerability in Capgo, classified under Improper Authorization. CVSS score: 5.3/10. Published 2026-06-22.
- How severe is CVE-2026-56311?
- Medium severity. CVSS v3 base score is 5.3 out of 10.