EUVD-2026-57425Published

Kong Mesh: kumactl connects to the control plane without verifying the TLS certificate when no CA is configured

Collected exploitation and prediction evidence

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

cve-program · CVE-2026-18678

Published

When an operator adds an HTTPS control plane profile to kumactl without providing a CA certificate, kumactl disables TLS verification and sends API tokens over the unverified connection. An attacker on the network path between the operator and the control plane can intercept user or admin API tokens and then act against the control plane as that user.

Source published: 12 Aug 2026 18:49:45 UTC
Source modified: 13 Aug 2026 14:47:36 UTC
Observed here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

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CVSS 4.0 · 5.5 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

cve-program · CVE-2026-50166

Published

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.

Source published: 15 Sep 2026 14:52:30 UTC
Source modified: 16 Sep 2026 15:50:24 UTC
Observed here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

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CVSS 4.0 · 5.5 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

euvd · EUVD-2026-57425

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Aug 12, 2026, 6:49:45 PM

dateUpdated: Aug 13, 2026, 2:47:36 PM

Source published: Aug 12, 2026, 6:49:45 PM (timezone not stated)
Source modified: Aug 13, 2026, 2:47:36 PM (timezone not stated)
Observed here: 7 Nov 2026 05:28:05 UTC
Source terms: ENISA EUVD · source terms and attribution apply

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EUVD CVSS 4.0 · 5.5 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

euvd · EUVD-2026-78773

Published

Original publisher date fields

datePublished: Sep 15, 2026, 2:52:30 PM

dateUpdated: Sep 16, 2026, 3:50:24 PM

Source published: Sep 15, 2026, 2:52:30 PM (timezone not stated)
Source modified: Sep 16, 2026, 3:50:24 PM (timezone not stated)
Observed here: 7 Nov 2026 11:32:59 UTC
Source terms: ENISA EUVD · source terms and attribution apply

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EUVD CVSS 4.0 · 5.5 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

nvd · CVE-2026-18678

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Awaiting Analysis

Weakness classifications: CWE-295

Original publisher date fields

published: 2026-08-12T19:17:31.323

lastModified: 2026-10-23T19:10:00.167

Source published: 12 Aug 2026 19:17:31 UTC
Source modified: 23 Oct 2026 19:10:00 UTC
Observed here: 25 Oct 2026 05:17:25 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

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CVSS 4.0 · 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb · Secondary · 5.5 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd · CVE-2026-50166

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Awaiting Analysis

Weakness classifications: CWE-295

Original publisher date fields

published: 2026-09-15T15:17:16.950

lastModified: 2026-09-30T17:43:24.057

Source published: 15 Sep 2026 15:17:16 UTC
Source modified: 30 Sep 2026 17:43:24 UTC
Observed here: 25 Oct 2026 12:17:38 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

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CVSS 4.0 · [email protected] · Secondary · 5.5 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

osv · GHSA-v95x-xhq5-4929

Published

When an operator adds an HTTPS control plane profile to `kumactl` without providing a CA certificate, `kumactl` disables TLS verification and sends API tokens over the unverified connection ## Impact An attacker on the network path between the operator and the control plane can intercept user or admin API tokens and then act against the control plane as that user ## Affected configurations - `kumactl` profiles manually added against an HTTPS control plane endpoint without `--ca-cert-file` ## Not affected - The default local profile, which uses plain HTTP ## Workarounds When adding an HTTPS control plane profile to `kumactl`, always pass `--ca-cert-file` pointing 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

Source published: 16 Jul 2026 19:12:08 UTC
Source modified: 13 Aug 2026 04:11:05 UTC
Observed here: 24 Oct 2026 13:19:41 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

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CVSS_V4 · 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

Publisher rating · MODERATE

osv · GO-2026-6010

Published

kumactl connects to control plane without verifying TLS certificate when no CA is configured in github.com/kumahq/kuma. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. (If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.) The additional affected modules and versions are: github.com/kumahq/kuma/v2 from v2.8.0 before v2.9.16.

Source published: 22 Jul 2026 20:36:55 UTC
Source modified: 13 Aug 2026 04:11:05 UTC
Observed here: 24 Oct 2026 13:19:41 UTC
Source terms: OSV · upstream source license applies

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · OSV · upstream source license applies. Source text is retained; field grouping and change labels are provided by ChangeIntel.