CVE-2026-40969

CVSS Score & Metrics

Base Score

3.7 / 10

Vector String

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

Vulnerability 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.

Vulnerability Details

Published Date

April 28, 2026

Last Modified

April 28, 2026

CWE ID

CWE-209

Source

NVD

Vendor

Spring

Product

Spring gRPC

External References

https://spring.io/security/cve-2026-40969

CVSS Score & Metrics

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