{"id":"CVE-2026-59387","state":"PUBLISHED","title":"Broken access control restriction in Cloud Controller API","description":"The Nginx routing configuration for Cloud Controller blocks unauthenticated access to /internal/v4/ and /internal/v5/ endpoints but omits an equivalent deny rule for /internal/v3/. As a result, the staging callback endpoints /internal/v3/staging/:guid/droplet_completed and /internal/v3/staging/:guid/build_completed are reachable from the public API listener without OAuth or mutual TLS.\n\n\n\n \n\n\n\nAn attacker with a valid build or droplet GUID can submit a forged staging callback, transition a droplet to STAGED, and persist arbitrary process metadata and sidecar data with no associated package or actor. A SpaceAuditor can enumerate GUIDs without write permissions, making this an effective privilege escalation beyond the intended role boundary.","publishedAt":"2026-10-30T08:47:59.006Z","updatedAt":"2026-10-30T20:10:53.458Z","severity":{"score":8.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"vmware"},"assigner":"vmware","products":["Cloud Foundry CAPI (Cloud Controller API)","Cloud Foundry cf-deployment"],"affected":[{"vendor":"Cloud Foundry","product":"CAPI (Cloud Controller API)","versions":[{"version":"0","status":"affected","lessThan":"v1.247.0","versionType":"semver"}]},{"vendor":"Cloud Foundry","product":"cf-deployment","versions":[{"version":"0","status":"affected","lessThan":"60.7.0","versionType":"semver"}]}],"references":["https://www.cloudfoundry.org/blog/cve-2026-59387-broken-access-control-restriction-in-cloud-controller-api/"],"weaknesses":["CWE-284"],"ingestedAt":"2026-10-30T20:14:06.645Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/59xxx/CVE-2026-59387.json","commit":"d7f5c3fe206091a44e450f13bfe51dc81b8a7843","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-59387","state":"PUBLISHED","datePublished":"2026-10-30T08:47:59.006Z","dateUpdated":"2026-10-30T20:10:53.458Z","assignerShortName":"vmware","assignerOrgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","dateReserved":"2026-07-04T18:15:19.504Z"},"containers":{"cna":{"title":"Broken access control restriction in Cloud Controller API","descriptions":[{"lang":"en","value":"The Nginx routing configuration for Cloud Controller blocks unauthenticated access to /internal/v4/ and /internal/v5/ endpoints but omits an equivalent deny rule for /internal/v3/. As a result, the staging callback endpoints /internal/v3/staging/:guid/droplet_completed and /internal/v3/staging/:guid/build_completed are reachable from the public API listener without OAuth or mutual TLS.\n\n\n\n \n\n\n\nAn attacker with a valid build or droplet GUID can submit a forged staging callback, transition a droplet to STAGED, and persist arbitrary process metadata and sidecar data with no associated package or actor. A SpaceAuditor can enumerate GUIDs without write permissions, making this an effective privilege escalation beyond the intended role boundary."}],"affected":[{"vendor":"Cloud Foundry","product":"CAPI (Cloud Controller API)","versions":[{"version":"0","status":"affected","lessThan":"v1.247.0","versionType":"semver"}]},{"vendor":"Cloud Foundry","product":"cf-deployment","versions":[{"version":"0","status":"affected","lessThan":"60.7.0","versionType":"semver"}]}],"references":[{"url":"https://www.cloudfoundry.org/blog/cve-2026-59387-broken-access-control-restriction-in-cloud-controller-api/"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseSeverity":"HIGH","baseScore":8.8,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}}],"providerMetadata":{"shortName":"vmware","orgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","dateUpdated":"2026-10-30T08:47:59.006Z"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-30T15:27:30.662530Z","id":"CVE-2026-59387","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-284","type":"CWE","lang":"en","description":"CWE-284 Improper Access Control"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-30T20:10:53.458Z"}}]}}}