Supabase – Unauthenticated Cross-Tenant Billing Log Tampering via public.record_build_time RPC_CVE-2026-56082

{
    "lastseen": "",
    "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.",
    "published": "2026-06-19T21:39:21.619Z",
    "modified": "2026-06-19T21:39:21.619Z",
    "type": "cve",
    "title": "Supabase - Unauthenticated Cross-Tenant Billing Log Tampering via public.record_build_time RPC",
    "source": "VulnCheck",
    "references": "https://github.com/Cap-go/capgo/security/advisories/GHSA-42xj-3h9w-26h5\nhttps://www.vulncheck.com/advisories/supabase-unauthenticated-cross-tenant-billing-log-tampering-via-public-record-build-time-rpc",
    "id": "CVE-2026-56082",
    "bulletinFamily": "",
    "cwe": [
        "CWE-284"
    ],
    "cvelist": null,
    "sourceData": "Cap-go capgo 0",
    "sourceHref": "",
    "cvss": {
        "score": 8.7,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
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        "baseScore": 0,
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        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "capgo",
    "version": "0",
    "vendor": "Cap-go",
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    "ai_score": 0
}