CVE-2026-40968

When an authenticated user is denied access to a gRPC method, their authenticated identity remains bound to the gRPC worker thread and can be inherited by a subsequent unauthenticated request on the same thread. This may allow the subsequent user to gain escalated permissions. Affected versions: Spring gRPC: 1.0.0 - 1.0.2 (fixed in 1.0.3). Older, unsupported versions are also affected.

CVSS v3 4.2 MEDIUM

4.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://spring.io/security/cve-2026-40968	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:vmware:spring_grpc:*:*:*:*:*:*:*:*

History

26 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Cuando a un usuario autenticado se le deniega el acceso a un método gRPC, su identidad autenticada permanece vinculada al hilo de trabajo gRPC y puede ser heredada por una solicitud no autenticada posterior en el mismo hilo. Esto puede permitir al usuario posterior obtener permisos escalados. Versiones afectadas: Spring gRPC: 1.0.0 - 1.0.2 (corregido en 1.0.3). Las versiones anteriores y no compatibles también están afectadas.

Information

Published : 2026-04-28 15:16

Updated : 2026-10-26 20:10

NVD link : CVE-2026-40968

Mitre link : CVE-2026-40968

CVE.ORG link : CVE-2026-40968

JSON object : View

Products Affected

vmware

spring_grpc

CWE

CWE-653

Improper Isolation or Compartmentalization

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