{"id":"CVE-2026-63116","title":"deepstream is a server that allows clients and backend services to sync data, send messages and make rpcs at scale","summary":"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…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-862"],"vendor":"deepstreamIO","product":"deepstream.io","affected":["deepstream.io >= 10.1.0, < 10.1.1"],"published":"2026-09-21","updated":"2026-09-21","sourceUpdated":"2026-09-21T17:17:38.510","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63116","references":[{"url":"https://github.com/deepstreamIO/deepstream.io/commit/1c2adde6581c53ef47e204364bc740bc3c2e2e2a","label":"security-advisories@github.com"},{"url":"https://github.com/deepstreamIO/deepstream.io/releases/tag/v10.1.1","label":"security-advisories@github.com"},{"url":"https://github.com/deepstreamIO/deepstream.io/security/advisories/GHSA-89vx-jh4q-vg3w","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-21T17:49:53.174Z","slug":"CVE-2026-63116","body":"## Overview\n\ndeepstream 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}