CVE-2025-6920

Ai-inference-server: authentication bypass via unprotected inference endpoint in api

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

A flaw was found in the authentication enforcement mechanism of a model inference API in ai-inference-server. All /v1/* endpoints are expected to enforce API key validation. However, the POST /invocations endpoint failed to do so, resulting in an authentication bypass. This vulnerability allows unauthorized users to access the same inference features available on protected endpoints, potentially exposing sensitive functionality or allowing unintended access to backend resources.

Se detectó una falla en el mecanismo de aplicación de la autenticación de una API de inferencia de modelos en ai-inference-server. Se espera que todos los endpoints /v1/* apliquen la validación de la clave API. Sin embargo, el endpoint POST /invocations no lo hizo, lo que resultó en una omisión de la autenticación. Esta vulnerabilidad permite a usuarios no autorizados acceder a las mismas funciones de inferencia disponibles en endpoints protegidos, lo que podría exponer funcionalidades sensibles o permitir el acceso no deseado a recursos del backend.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2025-06-30 CVE Reserved
2025-07-01 CVE Published
2025-07-01 CVE Updated
2025-07-26 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-306: Missing Authentication for Critical Function

CAPEC

References (2)

URL	Tag	Source
https://access.redhat.com/security/cve/CVE-2025-6920	Vdb Entry
https://bugzilla.redhat.com/show_bug.cgi?id=2375522	Issue Tracking

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Redhat Search vendor "Redhat"		Ai Inference Server Search vendor "Redhat" for product "Ai Inference Server"				*		-		Affected