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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-102340
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-04 21:17:40 UTC
Updated2026-11-09 17:17:05 UTC
DescriptionTelepresence 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.

Risk And Classification

Primary CVSS: v3.1 8.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

EPSS: 0.002810000 probability, percentile 0.207810000 (date 2026-11-09)

Problem Types: CWE-306 | CWE-862 | CWE-306 CWE-306: Missing Authentication for Critical Function | CWE-862 CWE-862: Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.5HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
3.1CNADECLARED8.5HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Telepresenceio Telepresence affected < 2.31.0 Not specified

References

ReferenceSourceLinkTags
github.com/telepresenceio/telepresence/releases/tag/v2.31.0 [email protected] github.com
github.com/telepresenceio/telepresence/commit/04ec3464fe8878fdc96420cdc8... [email protected] github.com
github.com/telepresenceio/telepresence/security/advisories/GHSA-j8j4-rw6... [email protected] github.com
github.com/telepresenceio/telepresence/commit/6871235b674a6e843908d09696... [email protected] github.com
github.com/telepresenceio/telepresence/commit/36458b65a010d2b316af48cd90... [email protected] github.com
github.com/telepresenceio/telepresence/pull/4217 [email protected] github.com
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