{"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"],"patched":["@deepstream/server 10.1.1"],"published":"2026-09-21","updated":"2026-09-24","sourceUpdated":"2026-09-24T21:25:27.050","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"},{"url":"https://github.com/deepstreamIO/deepstream.io/security/advisories/GHSA-89vx-jh4q-vg3w","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63116"},{"url":"https://github.com/advisories/GHSA-89vx-jh4q-vg3w"}],"tags":["nvd","cve.org","exploit-available","ghsa","npm"],"epss":0.00506,"epssPercentile":0.43018,"aliases":["GHSA-89vx-jh4q-vg3w"],"ecosystem":"npm","exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-09-21T17:59:12.110552Z"},"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.\n\n## Package advisory (CVE-2026-63116)\n\nAffected packages:\n\n- `@deepstream/server = 10.1.0`\n\nPatched in:\n\n- `@deepstream/server 10.1.1`\n\nSource: https://github.com/advisories/GHSA-89vx-jh4q-vg3w","depth":"midnight","depthScore":61,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":208712,"id":"CVE-2026-63116","ts":1790016703614,"field":"exploit_available","old":"false","new":"true"}]}