{"api_version":"1","generated_at":"2026-07-23T13:00:20+00:00","cve":"CVE-2026-15927","urls":{"html":"https://cve.report/CVE-2026-15927","api":"https://cve.report/api/cve/CVE-2026-15927.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-15927","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-15927"},"summary":{"title":"Quay: mirror-registry: ssrf: repo-level mirror accepts external_reference without url validation","description":"A flaw was found in Red Hat Quay's repository-level mirror configuration\nfeature. The POST and PUT handlers in endpoints/api/mirror.py accept an\nexternal_reference parameter without SSRF validation, unlike the\norganization-level mirror handlers which apply validate_external_registry_url().\nA repository administrator can supply a crafted hostname that causes the Quay\nmirror worker to make requests via Skopeo to internal network services, cloud\nmetadata endpoints, or other resources not intended to be reachable from the\nQuay application.","state":"PUBLISHED","assigner":"redhat","published_at":"2026-07-21 06:16:28","updated_at":"2026-07-21 18:31:51"},"problem_types":["CWE-918","CWE-918 Server-Side Request Forgery (SSRF)"],"metrics":[{"version":"3.1","source":"secalert@redhat.com","type":"Secondary","score":"6.8","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","baseScore":6.8,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"6.8","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","version":"3.1"}}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2501256","name":"https://bugzilla.redhat.com/show_bug.cgi?id=2501256","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/security/cve/CVE-2026-15927","name":"https://access.redhat.com/security/cve/CVE-2026-15927","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-15927","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-15927","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Red Hat","product":"mirror registry for Red Hat OpenShift 2","version":"","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat Quay 3","version":"","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat Quay 3","version":"","platforms":[]}],"timeline":[{"source":"CNA","time":"2026-02-13T00:00:00.000Z","lang":"en","value":"Reported to Red Hat."},{"source":"CNA","time":"2026-07-16T00:00:00.000Z","lang":"en","value":"Made public."}],"solutions":[],"workarounds":[{"source":"CNA","title":"","value":"Restrict network egress from Quay mirror worker pods/containers using network\npolicies or firewall rules to block access to internal network ranges\n(10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16) and cloud metadata endpoints\n(169.254.169.254, metadata.google.internal). Limit repository creation and\nadmin privileges to trusted users via Quay's RBAC configuration. If\nrepository-level mirroring is not required, disable the feature or restrict\naccess to the mirror API endpoints through a reverse proxy.","time":"","lang":"en"}],"exploits":[],"credits":[{"source":"CNA","value":"This issue was discovered by Martin Brodeur and Shaon Hossain (Red Hat).","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"15927","cve":"CVE-2026-15927","epss":"0.002310000","percentile":"0.139660000","score_date":"2026-07-21","updated_at":"2026-07-22 00:11:17"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-15927","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-07-21T13:12:11.259508Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-07-21T14:55:42.159Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:mirror_registry:2"],"defaultStatus":"affected","packageName":"openshift/mirror-registry-rhel8","product":"mirror registry for Red Hat OpenShift 2","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:quay:3"],"defaultStatus":"affected","packageName":"quay/quay-rhel8","product":"Red Hat Quay 3","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:quay:3"],"defaultStatus":"affected","packageName":"quay/quay-rhel9","product":"Red Hat Quay 3","vendor":"Red Hat"}],"credits":[{"lang":"en","value":"This issue was discovered by Martin Brodeur and Shaon Hossain (Red Hat)."}],"datePublic":"2026-07-16T00:00:00.000Z","descriptions":[{"lang":"en","value":"A flaw was found in Red Hat Quay's repository-level mirror configuration\nfeature. The POST and PUT handlers in endpoints/api/mirror.py accept an\nexternal_reference parameter without SSRF validation, unlike the\norganization-level mirror handlers which apply validate_external_registry_url().\nA repository administrator can supply a crafted hostname that causes the Quay\nmirror worker to make requests via Skopeo to internal network services, cloud\nmetadata endpoints, or other resources not intended to be reachable from the\nQuay application."}],"metrics":[{"other":{"content":{"namespace":"https://access.redhat.com/security/updates/classification/","value":"Important"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","description":"Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-07-21T04:45:27.751Z","orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat"},"references":[{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-15927"},{"name":"RHBZ#2501256","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2501256"}],"timeline":[{"lang":"en","time":"2026-02-13T00:00:00.000Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-07-16T00:00:00.000Z","value":"Made public."}],"title":"Quay: mirror-registry: ssrf: repo-level mirror accepts external_reference without url validation","workarounds":[{"lang":"en","value":"Restrict network egress from Quay mirror worker pods/containers using network\npolicies or firewall rules to block access to internal network ranges\n(10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16) and cloud metadata endpoints\n(169.254.169.254, metadata.google.internal). Limit repository creation and\nadmin privileges to trusted users via Quay's RBAC configuration. If\nrepository-level mirroring is not required, disable the feature or restrict\naccess to the mirror API endpoints through a reverse proxy."}],"x_generator":{"engine":"cvelib 1.8.0"},"x_redhatCweChain":"CWE-918: Server-Side Request Forgery (SSRF)"}},"cveMetadata":{"assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","assignerShortName":"redhat","cveId":"CVE-2026-15927","datePublished":"2026-07-21T04:45:27.751Z","dateReserved":"2026-07-16T06:31:41.405Z","dateUpdated":"2026-07-21T14:55:42.159Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-21 06:16:28","lastModifiedDate":"2026-07-21 18:31:51","problem_types":["CWE-918","CWE-918 Server-Side Request Forgery (SSRF)"],"metrics":{"cvssMetricV31":[{"source":"secalert@redhat.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","baseScore":6.8,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":2.3,"impactScore":4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-21T13:12:11.259508Z","id":"CVE-2026-15927","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"15927","Ordinal":"1","Title":"Quay: mirror-registry: ssrf: repo-level mirror accepts external_","CVE":"CVE-2026-15927","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"15927","Ordinal":"1","NoteData":"A flaw was found in Red Hat Quay's repository-level mirror configuration\nfeature. The POST and PUT handlers in endpoints/api/mirror.py accept an\nexternal_reference parameter without SSRF validation, unlike the\norganization-level mirror handlers which apply validate_external_registry_url().\nA repository administrator can supply a crafted hostname that causes the Quay\nmirror worker to make requests via Skopeo to internal network services, cloud\nmetadata endpoints, or other resources not intended to be reachable from the\nQuay application.","Type":"Description","Title":"Quay: mirror-registry: ssrf: repo-level mirror accepts external_"}]}}}