{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-61699","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-07-10T18:36:58.851Z","datePublished":"2026-09-04T19:43:28.633Z","dateUpdated":"2026-09-08T12:59:24.096Z"},"containers":{"cna":{"title":"nebula-mesh: Certificate revocation is never enforced at the mesh","problemTypes":[{"descriptions":[{"cweId":"CWE-299","lang":"en","description":"CWE-299: Improper Check for Certificate Revocation","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-672","lang":"en","description":"CWE-672: Operation on a Resource after Expiration or Release","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-cm26-5974-52h8","tags":["x_refsource_CONFIRM"],"url":"https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-cm26-5974-52h8"},{"name":"https://github.com/forgekeep/nebula-mesh/commit/0426e2f224a9b1e2029029bf923c93ed39d21cdb","tags":["x_refsource_MISC"],"url":"https://github.com/forgekeep/nebula-mesh/commit/0426e2f224a9b1e2029029bf923c93ed39d21cdb"},{"name":"https://github.com/forgekeep/nebula-mesh/releases/tag/v0.7.1","tags":["x_refsource_MISC"],"url":"https://github.com/forgekeep/nebula-mesh/releases/tag/v0.7.1"}],"affected":[{"vendor":"forgekeep","product":"nebula-mesh","versions":[{"version":"< 0.7.1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-04T19:43:28.633Z"},"descriptions":[{"lang":"en","value":"nebula-mesh is a self-hosted control plane for Slack Nebula mesh VPN. Prior to version 0.7.1, revocation is the only in-band mechanism that isolates a compromised/offboarded host from a Nebula mesh. Because the blocklist never reaches any peer's config.yml, a Blocked host retains full overlay reachability to every peer under its CA (and internal services on the mesh) for up to 30d (agent) / 365d (mobile). An attacker who exfiltrates host.key+host.crt can run stock slackhq/nebula directly, ignore the agent's 403/410 poll responses, and stay connected after the operator revokes the host. Operator-visible state (UI shows blocked, audit log records it) is misleading. This issue has been patched in version 0.7.1."}],"source":{"advisory":"GHSA-cm26-5974-52h8","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-cm26-5974-52h8","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-08T12:58:55.248635Z","id":"CVE-2026-61699","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-08T12:59:24.096Z"}}]}}