---
id: CVE-2026-102340
title: >-
  Telepresence: Traffic Manager gRPC has no auth — any pod claims arbitrary
  namespace and intercepts services, receiving victim environment secrets
summary: >-
  Telepresence enables local development against a remote Kubernetes or
  OpenShift cluster. Prior to 2.31.0, the Traffic Manager gRPC API on port 8081
  accepts unauthenticated cluster-network callers, ArriveAsClient stores a
  caller-supplied …
severity: high
cvss: 8.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-306
  - CWE-862
vendor: telepresenceio
product: telepresence
affected:
  - telepresence < 2.31.0
published: '2026-11-04'
updated: '2026-11-04'
sourceUpdated: '2026-11-04T20:39:55.525Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-102340'
references:
  - url: >-
      https://github.com/telepresenceio/telepresence/security/advisories/GHSA-j8j4-rw65-56r6
    label: >-
      https://github.com/telepresenceio/telepresence/security/advisories/GHSA-j8j4-rw65-56r6
  - url: 'https://github.com/telepresenceio/telepresence/pull/4217'
    label: 'https://github.com/telepresenceio/telepresence/pull/4217'
  - url: >-
      https://github.com/telepresenceio/telepresence/commit/04ec3464fe8878fdc96420cdc8036edefa0dc9ae
    label: >-
      https://github.com/telepresenceio/telepresence/commit/04ec3464fe8878fdc96420cdc8036edefa0dc9ae
  - url: >-
      https://github.com/telepresenceio/telepresence/commit/36458b65a010d2b316af48cd90e193ba190785d9
    label: >-
      https://github.com/telepresenceio/telepresence/commit/36458b65a010d2b316af48cd90e193ba190785d9
  - url: >-
      https://github.com/telepresenceio/telepresence/commit/6871235b674a6e843908d09696354c4b0f91578c
    label: >-
      https://github.com/telepresenceio/telepresence/commit/6871235b674a6e843908d09696354c4b0f91578c
  - url: 'https://github.com/telepresenceio/telepresence/releases/tag/v2.31.0'
    label: 'https://github.com/telepresenceio/telepresence/releases/tag/v2.31.0'
tags:
  - cve.org
ingestedAt: '2026-11-05T21:36:00.568Z'
epss: 0.00281
epssPercentile: 0.20751
---

## Overview

Telepresence enables local development against a remote Kubernetes or OpenShift cluster. Prior to 2.31.0, the Traffic Manager gRPC API on port 8081 accepts unauthenticated cluster-network callers, ArriveAsClient stores a caller-supplied Namespace using only the ManagesNamespace manager watchlist check, and CreateIntercept can target any managed namespace without checking the session's Kubernetes RBAC. An attacker operating any pod with network access to the manager can register in an arbitrary managed namespace, create service intercepts, receive intercepted traffic, and obtain the victim pod's complete container environment, including secrets, tokens, and API keys. The default cluster-wide deployment manages all namespaces. This vulnerability is fixed in 2.31.0.

## Affected

- `telepresence < 2.31.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.