{"id":"CVE-2026-63116","summary":"deepstream: PATCH_MULTI action bypasses Valve permission system allowing unauthorized record writes","details":"deepstream is a server that allows clients and backend services to sync data, send messages and make rpcs at scale. From 10.1.0 until 10.1.1, src/services/permission/valve/rules-map.ts omits RECORD_ACTION.PATCH_MULTI from RULES_MAP. When an authenticated user sends a PATCH_MULTI record operation while permission.type is config, getRulesForMessage returns a null rule specification and ConfigPermission.canPerformAction treats the missing specification as an unconditional allow instead of applying RULE_TYPES.WRITE. Any authenticated user can therefore modify arbitrary protected records, corrupt application state, or cause service disruption; deployments using the default permission type none already allow all operations and are not additionally affected. This issue is fixed in version 10.1.1.","aliases":["GHSA-89vx-jh4q-vg3w"],"modified":"2026-09-23T03:46:40.098682597Z","published":"2026-09-21T16:59:22.958Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63116.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-862"]},"references":[{"type":"WEB","url":"https://github.com/deepstreamIO/deepstream.io/releases/tag/v10.1.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63116.json"},{"type":"ADVISORY","url":"https://github.com/deepstreamIO/deepstream.io/security/advisories/GHSA-89vx-jh4q-vg3w"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63116"},{"type":"FIX","url":"https://github.com/deepstreamIO/deepstream.io/commit/1c2adde6581c53ef47e204364bc740bc3c2e2e2a"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/deepstreamio/deepstream.io","events":[{"introduced":"3abde8de3df91e1b6d18f719d9e38e94bfa314f6"},{"fixed":"1c2adde6581c53ef47e204364bc740bc3c2e2e2a"},{"fixed":"805461c7495c90ad669c103906cc3579db662905"}],"database_specific":{"extracted_events":[{"introduced":"10.1.0"},{"fixed":"10.1.1"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v10.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63116.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:H/A:H"}]}