{"id":"CVE-2026-63116","published":"2026-09-21T17:17:38.510","lastModified":"2026-09-24T21:25:27.050","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.","cvssScore":8.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-862"],"vendors":[],"products":[],"references":[{"url":"https://github.com/deepstreamIO/deepstream.io/commit/1c2adde6581c53ef47e204364bc740bc3c2e2e2a","tags":[]},{"url":"https://github.com/deepstreamIO/deepstream.io/releases/tag/v10.1.1","tags":[]},{"url":"https://github.com/deepstreamIO/deepstream.io/security/advisories/GHSA-89vx-jh4q-vg3w","tags":[]},{"url":"https://github.com/deepstreamIO/deepstream.io/security/advisories/GHSA-89vx-jh4q-vg3w","tags":[]}],"exploitRefs":[{"url":"https://github.com/deepstreamIO/deepstream.io/commit/1c2adde6581c53ef47e204364bc740bc3c2e2e2a","tags":[]},{"url":"https://github.com/deepstreamIO/deepstream.io/releases/tag/v10.1.1","tags":[]},{"url":"https://github.com/deepstreamIO/deepstream.io/security/advisories/GHSA-89vx-jh4q-vg3w","tags":[]},{"url":"https://github.com/deepstreamIO/deepstream.io/security/advisories/GHSA-89vx-jh4q-vg3w","tags":[]}],"hasPoc":true,"ai":{"summary":"The flaw allows any authenticated user to modify arbitrary protected records, corrupt application state, or cause service disruption due to missing permission checks.","exploitability":"Exploitation is relatively easy as it requires an authenticated user with permission.type set to config. Precondition is the user must be authenticated and have the ability to send a PATCH_MULTI record operation.","blast_radius":"If exploited, the impact could be severe, including arbitrary data modification, application state corruption, or service disruption.","remediation":"Upgrade to version 10.1.1 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["auth-bypass","data-corruption","service-disruption"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-09-29T09:17:13.694Z"}}