---
id: CVE-2026-50166
title: >-
  Kuma is a modern Envoy-based service mesh that can run on every cloud across
  both Kubernetes and VMs
summary: >-
  Kuma is a modern Envoy-based service mesh that can run on every cloud across
  both Kubernetes and VMs. Prior to 2.7.26, 2.9.16, 2.11.14, 2.12.11, and
  2.13.7, a kumactl profile manually configured for an HTTPS control plane
  without --ca-ce…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H'
cwe:
  - CWE-295
vendor: kumahq
product: kuma
affected:
  - kuma < 2.7.26
patched:
  - github.com/kumahq/kuma/v2 2.7.26
  - github.com/kumahq/kuma/v2 2.9.16
  - github.com/kumahq/kuma/v2 2.11.14
  - github.com/kumahq/kuma/v2 2.12.11
  - github.com/kumahq/kuma/v2 2.13.7
published: '2026-09-15'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T16:17:08.247'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-50166'
references:
  - url: >-
      https://github.com/kumahq/kuma/commit/2d0fb382924598f8746bc85c896f50384675940f
    label: security-advisories@github.com
  - url: >-
      https://github.com/kumahq/kuma/commit/85716397ffa404234bf365da0967eca0b0fa1870
    label: security-advisories@github.com
  - url: >-
      https://github.com/kumahq/kuma/commit/a256af4869ae7e0ebbc2a14dc231e04ac8df1ba3
    label: security-advisories@github.com
  - url: >-
      https://github.com/kumahq/kuma/commit/bb56ae628753aaec1f7846a514ab4edc35c0b569
    label: security-advisories@github.com
  - url: >-
      https://github.com/kumahq/kuma/commit/d4ae0c0151596be991897651f20c5cdf32de1980
    label: security-advisories@github.com
  - url: >-
      https://github.com/kumahq/kuma/commit/eb81494c2c7a5536e55c19cdde51b02a03b51e11
    label: security-advisories@github.com
  - url: 'https://github.com/kumahq/kuma/pull/16777'
    label: security-advisories@github.com
  - url: 'https://github.com/kumahq/kuma/security/advisories/GHSA-v95x-xhq5-4929'
    label: security-advisories@github.com
  - url: >-
      https://github.com/kumahq/kuma/commit/2ecadac1aa2fd8cded4c2ab768949f4c2ec83e2a
  - url: 'https://github.com/advisories/GHSA-v95x-xhq5-4929'
tags:
  - nvd
  - cve.org
  - ghsa
  - go
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-16T15:50:05.694452Z'
cvssSource: cna
aliases:
  - GHSA-v95x-xhq5-4929
ecosystem: go
ingestedAt: '2026-07-16T19:57:16.801Z'
epss: 0.00275
epssPercentile: 0.17728
---

## Overview

Kuma is a modern Envoy-based service mesh that can run on every cloud across both Kubernetes and VMs. Prior to 2.7.26, 2.9.16, 2.11.14, 2.12.11, and 2.13.7, a kumactl profile manually configured for an HTTPS control plane without --ca-cert-file disables TLS peer verification and sends API tokens over the unverified connection. An attacker on the network path can intercept user or administrator API tokens and act against the control plane as the compromised user. The default local profile is unaffected because it uses plain HTTP. This issue is fixed in versions 2.7.26, 2.9.16, 2.11.14, 2.12.11, and 2.13.7.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-50166)

Affected packages:

- `github.com/kumahq/kuma/v2 < 2.7.26`
- `github.com/kumahq/kuma/v2 >= 2.8.0, < 2.9.16`
- `github.com/kumahq/kuma/v2 >= 2.10.0, < 2.11.14`
- `github.com/kumahq/kuma/v2 >= 2.12.0, < 2.12.11`
- `github.com/kumahq/kuma/v2 >= 2.13.0, < 2.13.7`
- `github.com/kumahq/kuma <= 1.8.1`

Patched in:

- `github.com/kumahq/kuma/v2 2.7.26`
- `github.com/kumahq/kuma/v2 2.9.16`
- `github.com/kumahq/kuma/v2 2.11.14`
- `github.com/kumahq/kuma/v2 2.12.11`
- `github.com/kumahq/kuma/v2 2.13.7`

Source: https://github.com/advisories/GHSA-v95x-xhq5-4929