spring-projects/spring-grpc · Security
Spring gRPC SecurityContext leaks across requests upon authorization failure
- GHSA ID
- GHSA-4g9c-3x4p-mfpp
- CVE ID
- CVE-2026-40968
- Severity
- medium
- Published
- Updated
- CVSS
- 4.2 · CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
- CVSS v3
- 4.2 · CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
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.
CWEs
- CWE-653 · Improper Isolation or Compartmentalization