{"id":"CVE-2026-63116","state":"PUBLISHED","title":"deepstream: PATCH_MULTI action bypasses Valve permission system allowing unauthorized record writes","description":"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.","publishedAt":"2026-09-21T16:59:22.958Z","updatedAt":"2026-09-21T17:59:34.586Z","severity":{"score":8.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["deepstreamIO deepstream.io"],"affected":[{"vendor":"deepstreamIO","product":"deepstream.io","versions":[{"version":">= 10.1.0, < 10.1.1","status":"affected"}]}],"references":["https://github.com/deepstreamIO/deepstream.io/security/advisories/GHSA-89vx-jh4q-vg3w","https://github.com/deepstreamIO/deepstream.io/commit/1c2adde6581c53ef47e204364bc740bc3c2e2e2a","https://github.com/deepstreamIO/deepstream.io/releases/tag/v10.1.1"],"weaknesses":["CWE-862"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/63xxx/CVE-2026-63116.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63116","state":"PUBLISHED","datePublished":"2026-09-21T16:59:22.958Z","dateUpdated":"2026-09-21T17:59:34.586Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-07-15T16:54:55.816Z"},"containers":{"cna":{"title":"deepstream: PATCH_MULTI action bypasses Valve permission system allowing unauthorized record writes","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"deepstreamIO","product":"deepstream.io","versions":[{"version":">= 10.1.0, < 10.1.1","status":"affected"}]}],"references":[{"url":"https://github.com/deepstreamIO/deepstream.io/security/advisories/GHSA-89vx-jh4q-vg3w","name":"https://github.com/deepstreamIO/deepstream.io/security/advisories/GHSA-89vx-jh4q-vg3w","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/deepstreamIO/deepstream.io/commit/1c2adde6581c53ef47e204364bc740bc3c2e2e2a","name":"https://github.com/deepstreamIO/deepstream.io/commit/1c2adde6581c53ef47e204364bc740bc3c2e2e2a","tags":["x_refsource_MISC"]},{"url":"https://github.com/deepstreamIO/deepstream.io/releases/tag/v10.1.1","name":"https://github.com/deepstreamIO/deepstream.io/releases/tag/v10.1.1","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862: Missing Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-21T16:59:22.958Z"},"source":{"advisory":"GHSA-89vx-jh4q-vg3w","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/deepstreamIO/deepstream.io/security/advisories/GHSA-89vx-jh4q-vg3w","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-21T17:59:12.110552Z","id":"CVE-2026-63116","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-21T17:59:34.586Z"}}]}}}