Spring gRPC AuthenticationException message reflected to remote client_CVE-2026-40969

3.7 / 10

LOW

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Description

The raw message of every server-side AuthenticationException is returned to the unauthenticated remote caller in the gRPC status description. This allows an attacker to obtain information about the authentication failure, which may be useful for further attacks.

Affected versions:
Spring gRPC: 1.0.0 - 1.0.2 (fixed in 1.0.3). Older, unsupported versions are also affected.

Basic Information

ID CVE-2026-40969

Source vmware

Published Apr 28, 2026 at 14:54

Affected Product

Vendor Spring

Product Spring gRPC

Version 1.0.0

Affected Versions Spring Spring gRPC 1.0.0

CWE Classification

CWE-209

References

spring.io /security/cve-2026-40969

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    "published": "2026-04-28T14:54:07.360Z",
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