{"id":"CVE-2026-47725","sourceIdentifier":"security-advisories@github.com","published":"2026-07-28T19:17:34.237","lastModified":"2026-10-23T23:10:00.157","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.3, every /ui/* POST / PUT / PATCH / DELETE route processes the request as soon as the session cookie validates. SameSite=Lax on the session cookie prevents most cross-site form submits but does not protect: top-level form-submit navigations from third-party pages (some browsers still send Lax cookies on top-level POSTs); same-registrable-domain attackers (sibling-subdomain XSS, subdomain takeover); the GET /ui/logout route, which a third-party <img src=\".../ui/logout\"> can force-trigger. This issue has been patched in version 0.3.3."},{"lang":"es","value":"nebula-mesh es un plano de control autoalojado para la red privada virtual de malla Slack Nebula. Antes de la versión 0.3.3, cada ruta /ui/* POST / PUT / PATCH / DELETE procesa la solicitud tan pronto como la cookie de sesión valida. SameSite=Lax en la cookie de sesión previene la mayoría de los envíos de formularios entre sitios, pero no protege: las navegaciones de envío de formularios de nivel superior desde páginas de terceros (algunos navegadores aún envían cookies Lax en POSTs de nivel superior); atacantes del mismo dominio registrable (XSS de subdominio hermano, toma de control de subdominio); la ruta GET /ui/logout, que un tercero <img src=’... / ui/logout’> puede forzar a activar. Este problema ha sido parcheado en la versión 0.3.3."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"juev","product":"nebula-mesh","versions":[{"version":"< 0.3.3","status":"affected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/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","baseScore":6.9,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-28T19:36:15.390587Z","id":"CVE-2026-47725","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-352"}]}],"references":[{"url":"https://github.com/forgekeep/nebula-mesh/releases/tag/v0.3.3","source":"security-advisories@github.com"},{"url":"https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-273q-qgh5-wrj6","source":"security-advisories@github.com"},{"url":"https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-273q-qgh5-wrj6","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}