CVE-2026-56082

High

Description

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.

SeverityHigh

CVSS7.5

Exploit probability—

ProductCap-go Capgo

PublishedJun 19, 2026

First seenJun 19, 2026

Weakness typeCWE-284Improper access control

How to fix

Update

Cap-go capgo12.128.2 or later

Vendor advisories

github.com/Cap-go/capgo/security/advisories/GHSA-42xj-3h9w-26h5

Affected products

Product	Affected versions	Fixed in
Cap-go capgo	v < 12.128.2	12.128.2

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