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.
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://spring.io/security/cve-2026-40968 Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.8 · vmwareNVD modified 2026-10-26 20:10
Affected (CPE criteria) 1
cpe:2.3:a:vmware:spring_grpc:*:*:*:*:*:*:*:*
References 1
- https://spring.io/security/cve-2026-40968 Vendor Advisory