Capgo - Missing Authentication Middleware on GET /private/role_bindings Endpoint

Capgo (backend Supabase edge functions) before 12.128.2 does not apply the global authentication middleware to the GET /private/role_bindings/:org_id endpoint, unlike the POST and DELETE role_bindings routes, so unauthenticated requests reach the handler instead of being rejected at the middleware layer. The handler still performs its own authorization check and returns Unauthorized, so no direct data exposure occurs; the flaw is inconsistent authentication enforcement across HTTP methods that could enable authorization bypass if the handler logic changes.

Problem type

Missing Authentication for Critical Function

Affected products

Capgo

Capgo

< 12.128.2 - AFFECTED

12.128.2 - UNAFFECTED

References

GitHub Security Advisory (GHSA-6c9f-9v99-26ww)

https://github.com/Cap-go/capgo/security/advisories/GHSA-6c9f-9v99-26ww

vendor-advisory

VulnCheck Advisory: Capgo - Missing Authentication Middleware on GET /private/role_bindings Endpoint

https://www.vulncheck.com/advisories/capgo-missing-authentication-middleware-on-get-private-role-bindings-endpoint

third-party-advisory

JSON source

https://cveawg.mitre.org/api/cve/CVE-2026-56321

Click to expand

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2026-56321",
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "dateUpdated": "2026-06-22T21:04:48.914Z",
    "dateReserved": "2026-06-20T12:59:07.918Z",
    "datePublished": "2026-06-22T21:04:48.914Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck",
        "dateUpdated": "2026-06-22T21:04:48.914Z"
      },
      "datePublic": "2026-03-03T00:00:00.000Z",
      "title": "Capgo - Missing Authentication Middleware on GET /private/role_bindings Endpoint",
      "descriptions": [
        {
          "lang": "en",
          "value": "Capgo (backend Supabase edge functions) before 12.128.2 does not apply the global authentication middleware to the GET /private/role_bindings/:org_id endpoint, unlike the POST and DELETE role_bindings routes, so unauthenticated requests reach the handler instead of being rejected at the middleware layer. The handler still performs its own authorization check and returns Unauthorized, so no direct data exposure occurs; the flaw is inconsistent authentication enforcement across HTTP methods that could enable authorization bypass if the handler logic changes."
        }
      ],
      "affected": [
        {
          "vendor": "Capgo",
          "product": "Capgo",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "12.128.2"
            },
            {
              "version": "12.128.2",
              "status": "unaffected",
              "versionType": "semver"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "Missing Authentication for Critical Function",
              "cweId": "CWE-306",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://github.com/Cap-go/capgo/security/advisories/GHSA-6c9f-9v99-26ww",
          "name": "GitHub Security Advisory (GHSA-6c9f-9v99-26ww)",
          "tags": [
            "vendor-advisory"
          ]
        },
        {
          "url": "https://www.vulncheck.com/advisories/capgo-missing-authentication-middleware-on-get-private-role-bindings-endpoint",
          "name": "VulnCheck Advisory: Capgo - Missing Authentication Middleware on GET /private/role_bindings Endpoint",
          "tags": [
            "third-party-advisory"
          ]
        }
      ],
      "metrics": [
        {
          "format": "CVSS"
        },
        {
          "format": "CVSS",
          "cvssV3_1": {
            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "attackVector": "NETWORK",
            "attackComplexity": "LOW",
            "privilegesRequired": "NONE",
            "userInteraction": "NONE",
            "scope": "UNCHANGED",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM"
          }
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Judel777",
          "type": "reporter"
        }
      ]
    }
  }
}