CVE-2026-50166Kuma: kumactl connects to control plane without verifying TLS certificate when no CA is configured
Updated under an hour ago ()
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It affects kumahq kuma. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 5.5 MEDIUM (v4.0, CNA)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
- Weakness (CWE)
- CWE-295
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
kumahq kuma kumahq:kuma (from the name) | before 2.7.26 | CNA record |
References
- https://github.com/kumahq/kuma/security/advisories/GHSA-v95x-xhq5-4929x-refsource-confirm
- https://github.com/kumahq/kuma/pull/16777x-refsource-misc
- https://github.com/kumahq/kuma/commit/2d0fb382924598f8746bc85c896f50384675940fx-refsource-misc
- https://github.com/kumahq/kuma/commit/85716397ffa404234bf365da0967eca0b0fa1870x-refsource-misc
- https://github.com/kumahq/kuma/commit/a256af4869ae7e0ebbc2a14dc231e04ac8df1ba3x-refsource-misc
- https://github.com/kumahq/kuma/commit/bb56ae628753aaec1f7846a514ab4edc35c0b569x-refsource-misc
- https://github.com/kumahq/kuma/commit/d4ae0c0151596be991897651f20c5cdf32de1980x-refsource-misc
- https://github.com/kumahq/kuma/commit/eb81494c2c7a5536e55c19cdde51b02a03b51e11x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.