Vulnerability-Lookup

GHSA-RJ6X-MG28-WF4X

Vulnerability from github – Published: 2026-05-26 18:31 – Updated: 2026-06-01 15:30

Details

Files or Directories Accessible to External Parties, Server-Side Request Forgery (SSRF) vulnerability in Apache Flink Kubernetes Operator.

The FlinkSessionJob jarURI is currently not validated so that it points to user-owned files or addresses. 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 and access them through the submitted Flink job. Furthermore for fetching from http/https addresses 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.This issue affects Apache Flink Kubernetes Operator: from 1.3.0 before 1.15.0.

Users are recommended to upgrade to version 1.15.0, which fixes the issue.

Severity

6.5 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-40564"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-552"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-26T16:16:24Z",
    "severity": "MODERATE"
  },
  "details": "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\u0027s filesystem and pull content from any backing store reachable through Flink\u0027s 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": "GHSA-rj6x-mg28-wf4x",
  "modified": "2026-06-01T15:30:34Z",
  "published": "2026-05-26T18:31:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40564"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/jvxs2kh2o60sl7qkl5nss4r5phzfl4cz"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/26/6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-40564 (GCVE-0-2026-40564)

Vulnerability from cvelistv5 – Published: 2026-05-26 14:38 – Updated: 2026-06-02 14:12

Title

Apache Flink Kubernetes Operator: Server-Side Request Forgery and local file access in Kubernetes Operator

Summary

Files or Directories Accessible to External Parties, Server-Side Request Forgery (SSRF) vulnerability in Apache Flink Kubernetes Operator. The FlinkSessionJob jarURI is currently not validated so that it points to user-owned files or addresses. 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 and access them through the submitted Flink job. Furthermore for fetching from http/https addresses 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.This issue affects Apache Flink Kubernetes Operator: from 1.3.0 before 1.15.0. Users are recommended to upgrade to version 1.15.0, which fixes the issue.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-02 14:11 UTC

CWE

CWE-552 - Files or Directories Accessible to External Parties
CWE-918 - Server-Side Request Forgery (SSRF)

Assigner

apache CNA under the mitre root

CNA scorecard B 76/100 over 943 records in the last 180 days details

References

2 references

URL	Tags
https://lists.apache.org/thread/jvxs2kh2o60sl7qkl…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/05/26/6

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache Flink Kubernetes Operator	Affected: 1.3.0 , < 1.15.0 (semver)

Credits

Andrea Cosentino Andrea Cosentino

Show details on NVD website

JSON

To clipboard

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                "timestamp": "2026-06-02T14:11:43.962546Z",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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