CVE-2026-56082 (GCVE-0-2026-56082)

Vulnerability from cvelistv5 – Published: 2026-06-19 21:39 – Updated: 2026-06-20 12:22
VLAI
Title
Capgo - Unauthenticated Cross-Tenant Billing Log Tampering via public.record_build_time RPC
Summary
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.
CWE
  • CWE-284 - Improper Access Control
Assigner
References
Impacted products
Vendor Product Version
Cap-go capgo Affected: 0 , < 12.128.2 (semver)
Unaffected: 12.128.2 (semver)
Create a notification for this product.
Date Public
2026-03-17 00:00
Credits
Judel777
Show details on NVD website

{
  "containers": {
    "cna": {
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          "vendor": "Cap-go",
          "versions": [
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              "lessThan": "12.128.2",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
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            }
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          "type": "reporter",
          "value": "Judel777"
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      "descriptions": [
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          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
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            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "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",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "format": "CVSS"
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      "problemTypes": [
        {
          "descriptions": [
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              "description": "Improper Access Control",
              "lang": "en",
              "type": "CWE"
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-20T12:22:19.899Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
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      "references": [
        {
          "name": "GHSA Advisory GHSA-42xj-3h9w-26h5",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/Cap-go/capgo/security/advisories/GHSA-42xj-3h9w-26h5"
        },
        {
          "name": "VulnCheck Advisory: Supabase - Unauthenticated Cross-Tenant Billing Log Tampering via public.record_build_time RPC",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/supabase-unauthenticated-cross-tenant-billing-log-tampering-via-public-record-build-time-rpc"
        }
      ],
      "title": "Capgo - Unauthenticated Cross-Tenant Billing Log Tampering via public.record_build_time RPC",
      "x_generator": {
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  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-56082",
    "datePublished": "2026-06-19T21:39:21.619Z",
    "dateReserved": "2026-06-18T15:57:20.434Z",
    "dateUpdated": "2026-06-20T12:22:19.899Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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