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TI-2026-37844 Aliases CVE-2026-52724GHSA-wvmp-6r4v-j6cv

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

Priority LOW 26CWE-295Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
Present
Impact type
Spoofing
Confidentiality · integrity · availability
None · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-295.

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, Universal mode kuma-dp connections to an HTTPS control plane disable TLS peer verification when --ca-cert-file is not supplied and KUMA_CONTROL_PLANE_CA_CERT is unset. The dataplane authentication token is sent over the unverified connection, allowing an on-path attacker to intercept the token, impersonate the control plane, inject a forged bootstrap configuration, and take over the proxy. Standard Kubernetes installations created by kumactl install control-plane or the official Helm chart are unaffected because the mutating admission webhook injects KUMA_CONTROL_PLANE_CA_CERT into each sidecar. This issue is fixed in versions 2.7.26, 2.9.16, 2.11.14, 2.12.11, and 2.13.7.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0035 28th percentileScored 2026-11-07
Fix Fixed kuma (kumahq): 2.7.26, 2.9.16, 2.11.14 +2github.com/kumahq/kuma/v2 (Go): 2.7.26, 2.9.16, 2.11.14 +2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
kumahqkumabefore 2.7.26; 2.8.0 to before 2.9.16; 2.10.0 to before 2.11.14; 2.12.0 to before 2.12.11; 2.13.0 to before 2.13.72.7.26, 2.9.16, 2.11.14, 2.12.11, 2.13.7Patch availableCNA
—github.com/kumahq/kuma/v2 (Go)before 2.7.262.7.26Patch availableGHSA-wvmp-6r4v-j6cv
—github.com/kumahq/kuma/v2 (Go)2.8.0 to before 2.9.162.9.16Patch availableGHSA-wvmp-6r4v-j6cv
—github.com/kumahq/kuma/v2 (Go)2.10.0 to before 2.11.142.11.14Patch availableGHSA-wvmp-6r4v-j6cv
—github.com/kumahq/kuma/v2 (Go)2.12.0 to before 2.12.112.12.11Patch availableGHSA-wvmp-6r4v-j6cv
—github.com/kumahq/kuma/v2 (Go)2.13.0 to before 2.13.72.13.7Patch availableGHSA-wvmp-6r4v-j6cv
—github.com/kumahq/kuma (Go)up to 1.8.1—No fix listedGHSA-wvmp-6r4v-j6cv
  • kuma Vendorkumahq Affected before 2.7.26; 2.8.0 to before 2.9.16; 2.10.0 to before 2.11.14; 2.12.0 to before 2.12.11; 2.13.0 to before 2.13.7 Fixed in 2.7.26, 2.9.16, 2.11.14, 2.12.11, 2.13.7 Patch available CNA
  • github.com/kumahq/kuma/v2 (Go) Vendor— Affected before 2.7.26 Fixed in 2.7.26 Patch available GHSA-wvmp-6r4v-j6cv
  • github.com/kumahq/kuma/v2 (Go) Vendor— Affected 2.8.0 to before 2.9.16 Fixed in 2.9.16 Patch available GHSA-wvmp-6r4v-j6cv
  • github.com/kumahq/kuma/v2 (Go) Vendor— Affected 2.10.0 to before 2.11.14 Fixed in 2.11.14 Patch available GHSA-wvmp-6r4v-j6cv
  • github.com/kumahq/kuma/v2 (Go) Vendor— Affected 2.12.0 to before 2.12.11 Fixed in 2.12.11 Patch available GHSA-wvmp-6r4v-j6cv
  • github.com/kumahq/kuma/v2 (Go) Vendor— Affected 2.13.0 to before 2.13.7 Fixed in 2.13.7 Patch available GHSA-wvmp-6r4v-j6cv
  • github.com/kumahq/kuma (Go) Vendor— Affected up to 1.8.1 Fixed in — No fix listed GHSA-wvmp-6r4v-j6cv

Remediation

  • Fix · CNA kuma (kumahq) Fixed in 2.7.26, 2.9.16, 2.11.14, 2.12.11, 2.13.7
  • Fix · GHSA-wvmp-6r4v-j6cv github.com/kumahq/kuma/v2 (Go) Fixed in 2.7.26 Advisory →
  • Fix · GHSA-wvmp-6r4v-j6cv github.com/kumahq/kuma/v2 (Go) Fixed in 2.9.16 Advisory →
  • Fix · GHSA-wvmp-6r4v-j6cv github.com/kumahq/kuma/v2 (Go) Fixed in 2.11.14 Advisory →
  • Fix · GHSA-wvmp-6r4v-j6cv github.com/kumahq/kuma/v2 (Go) Fixed in 2.12.11 Advisory →
  • Fix · GHSA-wvmp-6r4v-j6cv github.com/kumahq/kuma/v2 (Go) Fixed in 2.13.7 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-52724
  2. 2026-10-03 Alias added: GHSA-wvmp-6r4v-j6cv
  3. 2026-11-06 Affected versions changed · Red Hat
  4. 2026-11-06 CVSS score added · Red Hat

References

Other 10

  • TI-2026-32876 Kuma: Default kuma-cp leaks admin token cross-origin via CORS wildcard + LocalhostIsAdmin CVSS 4.0MEDIUM 5.1
  • TI-2026-36929 Kuma: kumactl connects to control plane without verifying TLS certificate when no CA is configured CVSS 4.0MEDIUM 5.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences