{"id":"CVE-2026-52724","state":"PUBLISHED","title":"kuma-dp connects to control plane without verifying TLS certificate when no CA is configured","description":"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.","publishedAt":"2026-09-15T14:50:32.257Z","updatedAt":"2026-09-15T15:21:20.402Z","severity":{"score":5.8,"label":"Medium","version":"4.0","vector":"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","source":"GitHub_M"},"assigner":"GitHub_M","products":["kumahq kuma"],"affected":[{"vendor":"kumahq","product":"kuma","versions":[{"version":"< 2.7.26","status":"affected"},{"version":">= 2.8.0, < 2.9.16","status":"affected"},{"version":">= 2.10.0, < 2.11.14","status":"affected"},{"version":">= 2.12.0, < 2.12.11","status":"affected"},{"version":">= 2.13.0, < 2.13.7","status":"affected"}]}],"references":["https://github.com/kumahq/kuma/security/advisories/GHSA-wvmp-6r4v-j6cv","https://github.com/kumahq/kuma/pull/16777","https://github.com/kumahq/kuma/commit/2d0fb382924598f8746bc85c896f50384675940f","https://github.com/kumahq/kuma/commit/85716397ffa404234bf365da0967eca0b0fa1870","https://github.com/kumahq/kuma/commit/a256af4869ae7e0ebbc2a14dc231e04ac8df1ba3","https://github.com/kumahq/kuma/commit/bb56ae628753aaec1f7846a514ab4edc35c0b569","https://github.com/kumahq/kuma/commit/d4ae0c0151596be991897651f20c5cdf32de1980","https://github.com/kumahq/kuma/commit/eb81494c2c7a5536e55c19cdde51b02a03b51e11"],"weaknesses":["CWE-295"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/52xxx/CVE-2026-52724.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-52724","state":"PUBLISHED","datePublished":"2026-09-15T14:50:32.257Z","dateUpdated":"2026-09-15T15:21:20.402Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-08T14:00:43.571Z"},"containers":{"cna":{"title":"kuma-dp connects to control plane without verifying TLS certificate when no CA is configured","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"kumahq","product":"kuma","versions":[{"version":"< 2.7.26","status":"affected"},{"version":">= 2.8.0, < 2.9.16","status":"affected"},{"version":">= 2.10.0, < 2.11.14","status":"affected"},{"version":">= 2.12.0, < 2.12.11","status":"affected"},{"version":">= 2.13.0, < 2.13.7","status":"affected"}]}],"references":[{"url":"https://github.com/kumahq/kuma/security/advisories/GHSA-wvmp-6r4v-j6cv","name":"https://github.com/kumahq/kuma/security/advisories/GHSA-wvmp-6r4v-j6cv","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/kumahq/kuma/pull/16777","name":"https://github.com/kumahq/kuma/pull/16777","tags":["x_refsource_MISC"]},{"url":"https://github.com/kumahq/kuma/commit/2d0fb382924598f8746bc85c896f50384675940f","name":"https://github.com/kumahq/kuma/commit/2d0fb382924598f8746bc85c896f50384675940f","tags":["x_refsource_MISC"]},{"url":"https://github.com/kumahq/kuma/commit/85716397ffa404234bf365da0967eca0b0fa1870","name":"https://github.com/kumahq/kuma/commit/85716397ffa404234bf365da0967eca0b0fa1870","tags":["x_refsource_MISC"]},{"url":"https://github.com/kumahq/kuma/commit/a256af4869ae7e0ebbc2a14dc231e04ac8df1ba3","name":"https://github.com/kumahq/kuma/commit/a256af4869ae7e0ebbc2a14dc231e04ac8df1ba3","tags":["x_refsource_MISC"]},{"url":"https://github.com/kumahq/kuma/commit/bb56ae628753aaec1f7846a514ab4edc35c0b569","name":"https://github.com/kumahq/kuma/commit/bb56ae628753aaec1f7846a514ab4edc35c0b569","tags":["x_refsource_MISC"]},{"url":"https://github.com/kumahq/kuma/commit/d4ae0c0151596be991897651f20c5cdf32de1980","name":"https://github.com/kumahq/kuma/commit/d4ae0c0151596be991897651f20c5cdf32de1980","tags":["x_refsource_MISC"]},{"url":"https://github.com/kumahq/kuma/commit/eb81494c2c7a5536e55c19cdde51b02a03b51e11","name":"https://github.com/kumahq/kuma/commit/eb81494c2c7a5536e55c19cdde51b02a03b51e11","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"ADJACENT","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"HIGH","baseScore":5.8,"baseSeverity":"MEDIUM","vectorString":"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","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-295","lang":"en","description":"CWE-295: Improper Certificate Validation","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-15T14:50:32.257Z"},"source":{"advisory":"GHSA-wvmp-6r4v-j6cv","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-15T15:20:22.070620Z","id":"CVE-2026-52724","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-15T15:21:20.402Z"}}]}}}