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Advisory record · GHSA-w7r3-mgwf-4mqq

Kubernetes C# client accepts certificates from any CA without properly verifying the trust chain

CVSS 6.8 MediumEPSS 0.0031 · 23rd percentile

Published by the GitHub Advisory Database at 17 Sept 2025, 00:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
KubernetesClientNuGet<17.0.1417.0.14
Identifiers
GHSA-w7r3-mgwf-4mqq · CVE-2025-9708
Weakness (CWE)
CWE-295
Tags
Published
17 Sept 2025
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The NuGet package KubernetesClient, versions before 17.0.14, accepts certificates from any certificate authority without properly verifying the trust chain. An attacker positioned on the network path could present a forged certificate and intercept or manipulate traffic to the Kubernetes API server, enabling man-in-the-middle attacks and API impersonation. Upgrade to KubernetesClient 17.0.14 or later.

Written 9 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
6.8 Medium 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N CNA (kubernetes)
  • CISA KEV Not listed.
  • EPSS 0.0031, the 23rd percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 15:21 UTC First seen by agentprime
  2. 31 Oct 2026, 15:21 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.