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.
References
History

Thu, 30 Apr 2026 13:45:00 +0000

Type Values Removed Values Added
First Time appeared Vmware
Vmware spring Grpc
CPEs cpe:2.3:a:vmware:spring_grpc:*:*:*:*:*:*:*:*
Vendors & Products Vmware
Vmware spring Grpc

Wed, 29 Apr 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Spring
Spring spring
Vendors & Products Spring
Spring spring

Tue, 28 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 28 Apr 2026 14:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Spring gRPC SecurityContext leaks across requests on authorization failure
Weaknesses CWE-653
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: vmware

Published: 2026-04-28T13:42:35.525Z

Updated: 2026-04-28T14:36:35.953Z

Reserved: 2026-04-16T02:18:56.133Z

Link: CVE-2026-40968

cve-icon Vulnrichment

Updated: 2026-04-28T14:36:28.833Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-28T15:16:30.400

Modified: 2026-04-30T13:32:58.017

Link: CVE-2026-40968

cve-icon Redhat

No data.