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CVE Watch10 nov 2026

CVE-2026-115539

SwarmKit's Cluster-API proxy can overwrite a forwarded client's TLS identity with an intermediary manager's identity. WithMetadataForwardTLS

CVSS

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Sin CVSS

EPSS

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KEV

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Exploit Today

0

0-100

Publicado: 10 nov 2026 · Última mod.: 10 nov 2026 · CWE-441

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

SwarmKit's Cluster-API proxy can overwrite a forwarded client's TLS identity with an intermediary manager's identity. WithMetadataForwardTLSInfo replaces outgoing metadata with a copy of the incoming metadata, discarding the redirect guard's changes when built with grpc-go 1.39 or later. During a short window after a leader change, two proxy hops through managers with inconsistent views of the leader can allow an attacker possessing a valid worker node TLS certificate and private key to obtain a manager node certificate for the attacker's own key, escalating privileges from worker to manager. Applications built with an affected SwarmKit version and grpc-go 1.39 or later are impacted.

Referencias oficiales

github.comhttps://github.com/moby/swarmkit/security/advisories/GHSA-628g-hv7f-pgjc

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