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Vulnerability record · CVE-2026-56245 · published 24 June 2026

CVE-2026-56245: Improper privilege management vulnerability

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.

8.8 CVSS 4.0 High EPSS 0.46% · top 62.7% CWE-269 · Improper privilege management Deferred
8.8CVSS 4.0 base score
0.46%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
25 Jun 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/Cap-go/capgo/security/advisories/GHSA-42f8-v563-5763
https://www.vulncheck.com/advisories/supabase-capgo-unauthenticated-cross-tenant-build-time-accounting-poisoning-via-rec
https://github.com/Cap-go/capgo/security/advisories/GHSA-42f8-v563-5763

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Source: NIST National Vulnerability Database (record CVE-2026-56245), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.