CVE-2026-40969
Spring gRPC AuthenticationException message reflected to remote client
- State
- Published
- Severity
- 3.7 Low
- Published
- Apr 28, 2026
- Updated
- Apr 28, 2026
- Reserved
- Apr 16, 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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 3.7 Low | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N | vmware |
Weaknesses
- CWE-209 Generation of Error Message Containing Sensitive Information
Affected Products
| Product | Versions |
|---|---|
Spring gRPCSpring |
|
References
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