VULNERABILITY INTELLIGENCE

CVE-2026-40968

CVSS score4.3 MEDIUM
EPSS probability0.17%
CISA KEVNot currently listed
Published2026-04-28
Last modified2026-10-26
CVSS vectorCVSS: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.

Weakness classification

  • CWE-653: Improper Isolation or Compartmentalization

Primary references