CVE-2026-56245

High

Description

Supabase Capgo before 12.128.2 contains an authorization bypass vulnerability in the SECURITY DEFINER record_build_time RPC function that allows unauthenticated attackers to insert arbitrary build-time records. Attackers can exploit this by calling POST /rest/v1/rpc/record_build_time with a public API key to poison billing and quota data for any organization, enabling resource exhaustion and cross-tenant billing manipulation.

SeverityHigh

CVSS8.2

Exploit probability—

ProductCap-go Capgo

PublishedJun 24, 2026

First seenJun 24, 2026

Weakness typeCWE-269Improper privilege management

How to fix

Update

Cap-go capgo12.128.2 or later

Vendor advisories

github.com/Cap-go/capgo/security/advisories/GHSA-42f8-v563-5763

Affected products

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

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