Information disclosure in Spring Grpc
CVE-2026-40969
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.
EPSS: 0.002 (9.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Spring Grpc — versions 1.0.0
- Vmware Spring_grpc
Weakness classification (CWE)
References
- security@vmware.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-40969?
- CVE-2026-40969 is a low-severity vulnerability in Spring Grpc, classified under Generation of Error Message Containing Sensitive Information. CVSS score: 3.7/10. Published 2026-04-28.
- How severe is CVE-2026-40969?
- Low severity. CVSS v3 base score is 3.7 out of 10.