CVE-2026-102339
highTelepresence enables local development against a remote Kubernetes or OpenShift cluster.
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.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/telepresenceio/telepresence/commit/1312482488b771742dbedd3015f9a81a2753... security-advisories@github.com
- https://github.com/telepresenceio/telepresence/commit/36458b65a010d2b316af48cd90e193ba1907... security-advisories@github.com
- https://github.com/telepresenceio/telepresence/pull/4217 security-advisories@github.com
- https://github.com/telepresenceio/telepresence/releases/tag/v2.31.0 security-advisories@github.com
- https://github.com/telepresenceio/telepresence/security/advisories/GHSA-6j3h-rp73-6rvf security-advisories@github.com