# CVE-2026-40968

> Vulnerability · severity: **MEDIUM** (CVSS 4.2).

## 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.

## Key facts

- **CVE ID:** CVE-2026-40968
- **Published:** 2026-04-28
- **CVSS severity:** MEDIUM
- **CVSS base score:** 4.2
- **CWE codes:** CWE-653

## Affected products

- `vmware:spring_grpc`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40968

## Citation

> AI Analytics. CVE-2026-40968. Retrieved 2026-07-09 from https://api.ai-analytics.org/cve/CVE-2026-40968. Derived from NIST NVD. Licensed CC0.

---

*[Dataset catalog](https://api.ai-analytics.org/datasets/) · [AI Analytics](https://api.ai-analytics.org/) · CC0 1.0*