Executive Summary

CVE-2025-2786: Tempo Operator creates a ServiceAccount, ClusterRole, and ClusterRoleBinding when deploying a TempoStack or TempoMonolithic instance. A namespace‑level user can extract the ServiceAccount token and use TokenReview/SubjectAccessReview to discover other users’ permissions. While it does not grant privilege escalation or impersonation, it leaks permission data that could aid in reconnaissance for further attacks.

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Authoritative CVE Metadata - CVSS Base Score: 4.3 (MEDIUM) - Published: 2025-04-02T11:15:39.300 - Last Modified: 2026-09-07T22:17:20.340

Original Description: A flaw was found in Tempo Operator, where it creates a ServiceAccount, ClusterRole, and ClusterRoleBinding when a user deploys a TempoStack or TempoMonolithic instance. This flaw allows a user with full access to their namespace to extract the ServiceAccount token and use it to submit TokenReview and SubjectAccessReview requests, potentially revealing information about other users' permissions. While this does not allow privilege escalation or impersonation, it exposes information that could aid in gathering information for further attacks.

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