{"id":"GHSA-qwxf-2m7m-2m3x","summary":"Daytona: Cross-tenant data leak in notification WebSocket gateway via unverified organizationId join","details":"### Summary\nA cross-tenant authorization flaw in Daytona's notification WebSocket gateway allowed any authenticated user to subscribe to another organization's realtime notification channel and passively receive that organization's events.\n\n### Impact\nThe notification gateway's JWT handshake joined a client-supplied organization identifier to the corresponding notification room without verifying that the authenticated user was a member of that organization. As a result, an authenticated user could receive another organization's realtime sandbox, snapshot, volume, and runner events, including data carried in those events. This is a cross-tenant confidentiality break. It required a valid account and knowledge of the target organization id (a non-secret UUID); no elevated privileges were needed. The API-key authentication path was not affected.\n\nThe affected component is the Daytona API service (the `apps/api` NestJS application). It is distributed through Daytona's repository releases and container images for self-hosted deployments; it is not published as a Go or npm package, so the advisory will not surface through `go get` or npm dependency tooling.\n\n### Affected Versions\n\u003e= 0.101.0, \u003c= 0.184.0\n\n### Patched Versions\n0.185.0\n\n### Credit\n@vnth4nhnt from CyStack","aliases":["CVE-2026-54324","GO-2026-5598"],"modified":"2026-07-20T21:16:44.563011324Z","published":"2026-06-17T18:07:30Z","database_specific":{"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-06-17T18:07:30Z","nvd_published_at":"2026-06-23T18:18:09Z","cwe_ids":["CWE-639","CWE-863"]},"references":[{"type":"WEB","url":"https://github.com/daytonaio/daytona/security/advisories/GHSA-qwxf-2m7m-2m3x"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54324"},{"type":"PACKAGE","url":"https://github.com/daytonaio/daytona"}],"affected":[{"package":{"name":"github.com/daytonaio/daytona","ecosystem":"Go","purl":"pkg:golang/github.com/daytonaio/daytona"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.185.0"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 0.184.0","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-qwxf-2m7m-2m3x/GHSA-qwxf-2m7m-2m3x.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"}]}