Is there a public exploit for CVE-2026-102339?

No public exploit for CVE-2026-102339 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-102339?

CVE-2026-102339 scores CVSS 8.2 (v3.1), rated high.

What does CVE-2026-102339 affect?

CVE-2026-102339 affects telepresenceio TelePresence.

8.2 High

Telepresence enables local development against a remote Kubernetes or OpenShift cluster.

CVE-2026-102339

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.

Assessment

CVSS: 8.2 (v3.1)
Severity: High
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 4 November 2026
Last updated: 4 November 2026
Affected: telepresenceio · TelePresence
Assigner: GitHub_M

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

At the source

EUVD (ENISA)

References

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