{"id":"CVE-2026-48025","sourceIdentifier":"security-advisories@github.com","published":"2026-07-28T18:17:20.583","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 0.3.7, internal/pki/resolver.go:36-64 constructs a CAManager with the plaintext ed25519.PrivateKey after unwrapping via the master key; internal/pki/ca.go:13-16 stores it. Callers at internal/api/enroll.go:116, internal/api/updates.go:297, and internal/api/mobile_bundle.go:40 use the manager for one Sign() and drop the reference on function return — but the underlying slice contents are not wiped before release. The keystore package's contract (internal/keystore/keystore.go doc: \"Callers MUST zeroise the returned plaintext DEK as soon as it is no longer needed\") is not met by the CAManager consumer. Decrypted CA private keys persist in process heap until Go's GC scavenges the underlying slice — minutes to hours under load, indefinitely on idle servers. This issue has been patched in version 0.3.7."},{"lang":"es","value":"nebula-mesh es un plano de control autoalojado para la red privada virtual de malla Slack Nebula. Antes de la versión 0.3.7, internal/pki/resolver.go:36-64 construye un CAManager con la clave privada ed25519.PrivateKey en texto plano después de desempaquetar a través de la clave maestra; internal/pki/ca.go:13-16 la almacena. Las funciones que llaman en internal/api/enroll.go:116, internal/api/updates.go:297, e internal/api/mobile_bundle.go:40 usan el gestor para una única operación Sign() y eliminan la referencia al retornar la función - pero el contenido del slice subyacente no se borra antes de su liberación. El contrato del paquete keystore (documentación de internal/keystore/keystore.go: ’Las funciones que llaman DEBEN poner a cero la DEK en texto plano devuelta tan pronto como ya no sea necesaria’) no es cumplido por el consumidor de CAManager. Las claves privadas de CA descifradas persisten en el heap del proceso hasta que el recolector de basura (GC) de Go recolecta el slice subyacente - de minutos a horas bajo carga, indefinidamente en servidores inactivos. Este problema ha sido parcheado en la versión 0.3.7."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"juev","product":"nebula-mesh","versions":[{"version":"< 0.3.7","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:N/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":"NONE","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":"2026-07-29T13:54:53.423099Z","id":"CVE-2026-48025","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-244"}]}],"references":[{"url":"https://github.com/forgekeep/nebula-mesh/commit/bca1d5914fbaf3517d3b86145a802c00de4a8122","source":"security-advisories@github.com"},{"url":"https://github.com/forgekeep/nebula-mesh/releases/tag/v0.3.7","source":"security-advisories@github.com"},{"url":"https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-8h84-fhqq-q58v","source":"security-advisories@github.com"}]}