CVE-2026-102340
Telepresence: Traffic Manager gRPC has no auth — any pod claims arbitrary namespace and intercepts services, receiving victim environment secrets
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| telepresence telepresenceio |
< 2.31.0 (affected) | CNA: GitHub_M |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 8.5 high |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N | CNA: GitHub_M |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/telepresenceio/telepresence/security/advisories/GHSA-j8j4-rw65-56r6CNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/telepresenceio/telepresence/pull/4217CNA: GitHub_M · x_refsource_MISC
- https://github.com/telepresenceio/telepresence/commit/04ec3464fe8878fdc96420cdc8036edefa0dc9aeCNA: GitHub_M · x_refsource_MISC
- https://github.com/telepresenceio/telepresence/commit/36458b65a010d2b316af48cd90e193ba190785d9CNA: GitHub_M · x_refsource_MISC
- https://github.com/telepresenceio/telepresence/commit/6871235b674a6e843908d09696354c4b0f91578cCNA: GitHub_M · x_refsource_MISC
- https://github.com/telepresenceio/telepresence/releases/tag/v2.31.0CNA: GitHub_M · x_refsource_MISC
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