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CVE-2026-102340— Telepresence: Traffic Manager gRPC has no auth — any pod claims arbitrary namespace and intercepts services, receiving victim environment secrets

Quick assessment

Affected
telepresenceio telepresence
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Telepresence 支持在本地对远程 Kubernetes 或 OpenShift 集群进行开发。在 2.31.0 版本之前，Traffic Manager 的 gRPC API（运行在 8081 端口）会接受来自集群网络的未认证调用者；ArriveAsClient 在存储调用者提供的命名空间时，仅依赖 ManagesNamespace 管理器的监听列表进行检查；而 CreateIntercept 操作可在不验证会话的 Kubernetes RBAC 权限的情况下，针对任意受管命名空间执行。任何能够通过网络访

CVSS 8.5 · High
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I. Basic Information for CVE-2026-102340

Vulnerability Information
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Vulnerability Title
Telepresence: Traffic Manager gRPC has no auth — any pod claims arbitrary namespace and intercepts services, receiving victim environment secrets
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
telepresenceio telepresence < 2.31.0 -

II. Public POCs for CVE-2026-102340

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III. Intelligence Information for CVE-2026-102340

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Other References for CVE-2026-102340 (6)

IV. Related Vulnerabilities

Same product: telepresence
Same vendor: telepresenceio
Same weakness: CWE-306