CVE-2026-56245 PUBLISHED

Supabase Capgo - Unauthenticated Cross-Tenant Build-Time Accounting Poisoning via record_build_time RPC

Assigner: VulnCheck
Reserved: 19.06.2026 Published: 24.06.2026 Updated: 24.06.2026

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.

CVSS Vector: 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
CVSS Score: 8.8

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	Low	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
CVSS Score: 8.2

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	Cap-go
Product	capgo
Versions	Default: unaffected affected from 0 to 12.128.2 (excl.) Version 12.128.2 is unaffected

CVE-2026-56245 PUBLISHED

Supabase Capgo - Unauthenticated Cross-Tenant Build-Time Accounting Poisoning via record_build_time RPC

Metrics

Product Status

Credits

References

Problem Types