🛡️ CVE-2026-40564
🟡 CVSS 6.5 — Medium ✅ No Known Exploit CWE-552 NVD
6.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity MEDIUM
CVSS Score 6.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE CWE-552
Public Exploit âś… No
Source NVD
Published 2026-05-26
Updated 2026-06-03
Modified 2026-06-02
Fix URL N/A

Affected Packages

Software From version Fixed in
flink-kubernetes-operator 1.3.0 1.15.0
unknown — —

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