Vulnerability in Cap-Go Capgo
CVE-2026-56082
Capgo (Cap-go/capgo) before 12.128.2 contains an improper access control vulnerability in the SECURITY DEFINER PostgREST RPC function public.record_build_time, which is granted to the anon role and callable with only the public Supabase publishable (sb_publishable_*) anon key. An unauthenticated attacker can insert rows into public.build_logs for arbitrary organizations and, because the function uses ON CONFLICT (build_id, org_id) DO UPDATE, can overwrite existing usage/billing records by reusing the same build_id for a target org. This enables cross-tenant tampering of billing build logs and financial-impact denial of service by inflating billable build time.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (31.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.1% 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-42xj-3h9w-26h5 (vendor-advisory)
- www.vulncheck.com/advisories/supabase-unauthenticated-cross-tenant-billing-log-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-56082?
- CVE-2026-56082 is a high-severity vulnerability in Cap-Go Capgo, classified under Improper Access Control. CVSS score: 7.5/10. Published 2026-06-19.
- How severe is CVE-2026-56082?
- High severity. CVSS v3 base score is 7.5 out of 10.