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CVE-2026-102339 Details

Description

Telepresence enables local development against a remote Kubernetes or OpenShift cluster. Prior to 2.31.0, the Traffic Manager Tunnel gRPC streaming endpoint parses a session ID from the first bytes of a caller-controlled message in pkg/tunnel/message.go and passes it to state.Tunnel without verifying that the caller owns the active session. An attacker who obtains a valid active session ID through log leakage, cluster-internal channels, or the unauthenticated ArriveAsClient endpoint can attach a routed tunnel to that session and gain its network routing capabilities. UUID4 session IDs make cold brute force impractical. This vulnerability is fixed in 2.31.0.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:8.2 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/telepresenceio/telepresence/commit/1312482488b771742dbedd3015f9a81a27532de6	[email protected]
https://github.com/telepresenceio/telepresence/commit/36458b65a010d2b316af48cd90e193ba190785d9	[email protected]
https://github.com/telepresenceio/telepresence/pull/4217	[email protected]
https://github.com/telepresenceio/telepresence/releases/tag/v2.31.0	[email protected]
https://github.com/telepresenceio/telepresence/security/advisories/GHSA-6j3h-rp73-6rvf	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-639	Authorization Bypass Through User-Controlled Key	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

1 change record found show changes