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NVD Vulnerability Details :
CVE-2026-40564
Modified
More InfoOfficial Page
Source-security@apache.org
View Known Exploited Vulnerability (KEV) details
Published At-26 May, 2026 | 16:16
Updated At-02 Jun, 2026 | 16:16

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Secondary3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Type: Primary
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Type: Secondary
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CPE Matches
The Apache Software Foundation
apache
>>flink_kubernetes_operator>>Versions from 1.3.0(inclusive) to 1.15.0(exclusive)
cpe:2.3:a:apache:flink_kubernetes_operator:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-552Secondarysecurity@apache.org
CWE-918Secondarysecurity@apache.org
CWE ID: CWE-552
Type: Secondary
Source: security@apache.org
CWE ID: CWE-918
Type: Secondary
Source: security@apache.org
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://lists.apache.org/thread/jvxs2kh2o60sl7qkl5nss4r5phzfl4czsecurity@apache.org
Mailing List
http://www.openwall.com/lists/oss-security/2026/05/26/6af854a3a-2127-422b-91ae-364da2661108
Mailing List
Third Party Advisory
Hyperlink: https://lists.apache.org/thread/jvxs2kh2o60sl7qkl5nss4r5phzfl4cz
Source: security@apache.org
Resource:
Mailing List
Hyperlink: http://www.openwall.com/lists/oss-security/2026/05/26/6
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Mailing List
Third Party Advisory
Change History
0Changes found
Details not found