CVE-2026-56245 | Supabase Capgo before 12.128.2 contains an authorization byp… | CVSS 8.2 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.

Metadata

CVE ID: CVE-2026-56245
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-06-19 21:53 UTC
Published: 2026-06-24 11:53 UTC
Last updated: 2026-06-24 11:53 UTC
Primary CWE: CWE-269
Improper Privilege Management
Vendor / Product: Cap-go / capgo
Sources: cve.org · NVD

Severity & Metrics

8.2 HIGH CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L

Affected products (1)

Vendor	Product	Platform	Versions
Cap-go	capgo	—	0 < 12.128.2, 12.128.2

Weakness (CWE)

CWE	Source	Description
CWE-269	cna	Improper Privilege Management

CVSS scores (2)

Score	Severity	Version	Source	Vector
8.8	HIGH	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
8.2	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L

References (2)

GitHub Security Advisory (GHSA-42f8-v563-5763) https://github.com/Cap-go/capgo/security/advisories/GHSA-42f8-v563-5763
VulnCheck Advisory: Supabase Capgo - Unauthenticated Cross-Tenant Build-Time Accounting Poisoning via record_build_time RPC https://www.vulncheck.com/advisories/supabase-capgo-unauthenticated-cross-tenant-build-time-accounting-poisoning-via-record-build-time-rpc