{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-40564", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-04-14T12:59:12.603Z", "datePublished": "2026-05-26T14:38:21.937Z", "dateUpdated": "2026-05-26T16:18:03.659Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Apache Flink Kubernetes Operator", "vendor": "Apache Software Foundation", "versions": [{"lessThan": "1.15.0", "status": "affected", "version": "1.3.0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Andrea Cosentino"}, {"lang": "en", "type": "remediation developer", "value": "Andrea Cosentino"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Files or Directories Accessible to External Parties, Server-Side Request Forgery (SSRF) vulnerability in Apache Flink Kubernetes Operator.</p>The FlinkSessionJob jarURI is currently not validated so that it points to user-owned files or addresses.&nbsp;<span style=\"background-color: rgb(255, 255, 255);\">&nbsp;This lets a user with CR create permissions read files from the operator pod's filesystem and pull content from any backing store reachable through Flink's pluggable filesystem layer <span style=\"background-color: rgb(255, 255, 255);\">and access them through the submitted Flink job</span>. Furthermore for fetching from http/https addresses&nbsp;<span style=\"background-color: rgb(255, 255, 255);\">there is currently no allowlist on the URI scheme, no host check, no IP-range restriction, and no protection against pointing the URI at internal or link-local addresses.</span></span><div><p>This issue affects Apache Flink Kubernetes Operator: from 1.3.0 before 1.15.0.</p><p>Users are recommended to upgrade to version 1.15.0, which fixes the issue.</p></div>"}], "value": "Files or Directories Accessible to External Parties, Server-Side Request Forgery (SSRF) vulnerability in Apache Flink Kubernetes Operator.\n\nThe FlinkSessionJob jarURI is currently not validated so that it points to user-owned files or addresses.\u00a0\u00a0This lets a user with CR create permissions read files from the operator pod's filesystem and pull content from any backing store reachable through Flink's pluggable filesystem layer and access them through the submitted Flink job. Furthermore for fetching from http/https addresses\u00a0there is currently no allowlist on the URI scheme, no host check, no IP-range restriction, and no protection against pointing the URI at internal or link-local addresses.This issue affects Apache Flink Kubernetes Operator: from 1.3.0 before 1.15.0.\n\nUsers are recommended to upgrade to version 1.15.0, which fixes the issue."}], "metrics": [{"other": {"content": {"text": "moderate"}, "type": "Textual description of severity"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-552", "description": "CWE-552 Files or Directories Accessible to External Parties", "lang": "en", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-918", "description": "CWE-918 Server-Side Request Forgery (SSRF)", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-05-26T14:38:21.937Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://lists.apache.org/thread/jvxs2kh2o60sl7qkl5nss4r5phzfl4cz"}], "source": {"discovery": "EXTERNAL"}, "title": "Apache Flink Kubernetes Operator: Server-Side Request Forgery and local file access in Kubernetes Operator", "x_generator": {"engine": "Vulnogram 0.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/05/26/6"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-05-26T16:18:03.659Z"}}]}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Files or Directories Accessible to External Parties, Server-Side Request Forgery (SSRF) vulnerability in Apache Flink Kubernetes Operator.\n\nThe FlinkSessionJob jarURI is currently not validated so that it points to user-owned files or addresses.\u00a0\u00a0This lets a user with CR create permissions read files from the operator pod's filesystem and pull content from any backing store reachable through Flink's pluggable filesystem layer and access them through the submitted Flink job. Furthermore for fetching from http/https addresses\u00a0there is currently no allowlist on the URI scheme, no host check, no IP-range restriction, and no protection against pointing the URI at internal or link-local addresses.This issue affects Apache Flink Kubernetes Operator: from 1.3.0 before 1.15.0.\n\nUsers are recommended to upgrade to version 1.15.0, which fixes the issue."}], "id": "CVE-2026-40564", "lastModified": "2026-05-26T17:16:41.723", "metrics": {}, "published": "2026-05-26T16:16:24.590", "references": [{"source": "security@apache.org", "url": "https://lists.apache.org/thread/jvxs2kh2o60sl7qkl5nss4r5phzfl4cz"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2026/05/26/6"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-552"}, {"lang": "en", "value": "CWE-918"}], "source": "security@apache.org", "type": "Secondary"}]}

{}

{"created": "2026-05-26T17:00:13.107815+00:00", "updated": "2026-05-26T17:00:13.107826+00:00", "vendors": []}