Telepresenceio Telepresence up to 2.30.x Traffic Manager gRPC API CreateIntercept Namespace privileges management

Summaryinfo

A vulnerability described as critical has been identified in Telepresenceio Telepresence up to 2.30.x. Affected by this issue is the function CreateIntercept of the component Traffic Manager gRPC API. Executing a manipulation of the argument Namespace can lead to privileges management. This vulnerability is tracked as CVE-2026-102340. The attack can be launched remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Telepresenceio Telepresence up to 2.30.x and classified as critical. This vulnerability affects the function CreateIntercept of the component Traffic Manager gRPC API. The manipulation of the argument Namespace with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-102340 since 09/29/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 2.31.0 eliminates this vulnerability.

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Productinfo

Vendor

• Telepresenceio

Name

• Telepresence

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20
• 2.21
• 2.22
• 2.23
• 2.24
• 2.25
• 2.26
• 2.27
• 2.28
• 2.29
• 2.30

Website

• Product: https://github.com/telepresenceio/telepresence/

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