CVE-2026-40968
Medium
Description
When an authenticated user is denied access to a gRPC method, their authenticated identity remains bound to the gRPC worker thread and can be inherited by a subsequent unauthenticated request on the same thread. This may allow the subsequent user to gain escalated permissions. Affected versions: Spring gRPC: 1.0.0 - 1.0.2 (fixed in 1.0.3). Older, unsupported versions are also affected.
SeverityMedium
CVSS4.2
Exploit probability7. percentile0.2%
Product
Vmware Spring Grpc
PublishedApr 28, 2026
First seenApr 28, 2026
Weakness typeCWE-653CWE-653
How to fix
Update
- vmware spring_grpc1.0.3 or later
- org.springframework.grpc:spring-grpc1.0.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| vmware spring_grpc | v < 1.0.3 | 1.0.3 |
| org.springframework.grpc:spring-grpcMaven | v < 1.0.3 | 1.0.3 |
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