CVE-2026-23537

A vulnerability has been identified in the Feast Feature Server’s `/save-document` endpoint that allows an unauthenticated remote attacker to write arbitrary JSON files to the server's filesystem. Although the system attempts to restrict file locations, these protections can be bypassed, enabling an attacker to overwrite vital application configurations or startup scripts. Because this flaw requires no credentials or special privileges, any attacker with network access to the server can potentially compromise the integrity of the system. This could lead to unauthorized system modifications, denial of service through disk exhaustion, or potential remote code execution.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-23537
https://bugzilla.redhat.com/show_bug.cgi?id=2429304
https://github.com/red-hat-data-services/feast/pull/192
https://access.redhat.com/security/cve/CVE-2026-23537
https://bugzilla.redhat.com/show_bug.cgi?id=2429304
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23537.json

Configurations

No configuration.

History

02 Jul 2026, 12:16

Type	Values Removed	Values Added
References		() https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23537.json -
References	~~() https://access.redhat.com/security/cve/CVE-2026-23537 -~~	() https://access.redhat.com/security/cve/CVE-2026-23537 -
References	~~() https://bugzilla.redhat.com/show_bug.cgi?id=2429304 -~~	() https://bugzilla.redhat.com/show_bug.cgi?id=2429304 -

01 Jul 2026, 15:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-01 15:17

Updated : 2026-07-15 02:18

NVD link : CVE-2026-23537

Mitre link : CVE-2026-23537

CVE.ORG link : CVE-2026-23537

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

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"descriptions": [{"lang": "en", "value": "A vulnerability has been identified in the Feast Feature Server\u2019s `/save-document` endpoint that allows an unauthenticated remote attacker to write arbitrary JSON files to the server's filesystem. Although the system attempts to restrict file locations, these protections can be bypassed, enabling an attacker to overwrite vital application configurations or startup scripts. Because this flaw requires no credentials or special privileges, any attacker with network access to the server can potentially compromise the integrity of the system. This could lead to unauthorized system modifications, denial of service through disk exhaustion, or potential remote code execution."}], "lastModified": "2026-07-15T02:18:43.183", "sourceIdentifier": "secalert@redhat.com"}