GHSA-wvmp-6r4v-j6cv

Source

https://github.com/advisories/GHSA-wvmp-6r4v-j6cv

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-wvmp-6r4v-j6cv/GHSA-wvmp-6r4v-j6cv.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-wvmp-6r4v-j6cv

Aliases

Published

2026-07-16T20:09:12Z

Modified

2026-08-13T04:10:47Z

Severity

5.8 (Medium) CVSS_V4 - CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H CVSS Calculator

Summary

kuma-dp connects to control plane without verifying TLS certificate when no CA is configured

Details

When kuma-dp is started against an HTTPS control plane and the operator did not pass a CA certificate, the data plane connects with TLS peer verification disabled. The dataplane authentication token is sent over this unverified connection

Impact

An on-path attacker can intercept the dataplane authentication token and impersonate the control plane to the data plane, allowing them to inject a forged bootstrap configuration and take over the proxy

Affected configurations

Universal mode kuma-dp started against an HTTPS control plane without --ca-cert-file (or KUMA_CONTROL_PLANE_CA_CERT unset)

Not affected

Kubernetes installs done through the standard installers (kumactl install control-plane or the official Helm chart). In both cases the control plane's mutating admission webhook injects KUMA_CONTROL_PLANE_CA_CERT into every sidecar at pod admission, so each kuma-dp starts with the CA already configured

Workarounds

Set --ca-cert-file (or KUMA_CONTROL_PLANE_CA_CERT) on every Universal mode data plane and point it at the control plane's serving CA. Alternatively, terminate the control plane behind a publicly trusted certificate; the patched releases will verify successfully against the operating system trust store with no further configuration

Resources

Fix: https://github.com/kumahq/kuma/pull/16777

Database specific

{
    "cwe_ids":  [
        "CWE-295"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-07-16T20:09:12Z",
    "nvd_published_at":  null,
    "severity":  "MODERATE"
}

References

Affected packages

github.com/kumahq/kuma/v2

Package

Name: github.com/kumahq/kuma/v2; View open source insights on deps.dev
Purl: pkg:golang/github.com/kumahq/kuma/v2

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

2.7.26

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-wvmp-6r4v-j6cv/GHSA-wvmp-6r4v-j6cv.json"

github.com/kumahq/kuma/v2

Package

Name: github.com/kumahq/kuma/v2; View open source insights on deps.dev
Purl: pkg:golang/github.com/kumahq/kuma/v2

Affected ranges

Type: SEMVER
Events: Introduced

2.8.0

Fixed

2.9.16

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-wvmp-6r4v-j6cv/GHSA-wvmp-6r4v-j6cv.json"

github.com/kumahq/kuma/v2

Package

Name: github.com/kumahq/kuma/v2; View open source insights on deps.dev
Purl: pkg:golang/github.com/kumahq/kuma/v2

Affected ranges

Type: SEMVER
Events: Introduced

2.10.0

Fixed

2.11.14

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-wvmp-6r4v-j6cv/GHSA-wvmp-6r4v-j6cv.json"

github.com/kumahq/kuma/v2

Package

Name: github.com/kumahq/kuma/v2; View open source insights on deps.dev
Purl: pkg:golang/github.com/kumahq/kuma/v2

Affected ranges

Type: SEMVER
Events: Introduced

2.12.0

Fixed

2.12.11

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-wvmp-6r4v-j6cv/GHSA-wvmp-6r4v-j6cv.json"

github.com/kumahq/kuma/v2

Package

Name: github.com/kumahq/kuma/v2; View open source insights on deps.dev
Purl: pkg:golang/github.com/kumahq/kuma/v2

Affected ranges

Type: SEMVER
Events: Introduced

2.13.0

Fixed

2.13.7

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-wvmp-6r4v-j6cv/GHSA-wvmp-6r4v-j6cv.json"

github.com/kumahq/kuma

Package

Name: github.com/kumahq/kuma; View open source insights on deps.dev
Purl: pkg:golang/github.com/kumahq/kuma

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Last Affected

1.8.1

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-wvmp-6r4v-j6cv/GHSA-wvmp-6r4v-j6cv.json"