CVE-2026-40969

MediumCVSS 5.3/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-209

Affected software

No affected versions have been published.

Timeline

Published: Apr 28, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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