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CVE-2026-63116— deepstream: PATCH_MULTI action bypasses Valve permission system allowing unauthorized record writes

Quick assessment

Affected
deepstreamIO deepstream.io
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Deepstream 是一个服务器，允许客户端和后端服务大规模地同步数据、发送消息以及执行 RPC 调用。在 10.1.0 到 10.1.1 版本中，src/services/permission/valve/rules-map.ts 文件未在 RULES_MAP 中包含 RECORD_ACTION.PATCH_MULTI。当已认证的用户发送 PATCH_MULTI 记录操作，且 permission.type 为 config 时，getRulesForMessage 函数会返回一个空的规则规范（null rul

CVSS 8.8 · High EPSS 0.51% · P42

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
deepstreamIO deepstream.io >= 10.1.0, < 10.1.1 affected
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I. Basic Information for CVE-2026-63116

Vulnerability Information
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Vulnerability Title
deepstream: PATCH_MULTI action bypasses Valve permission system allowing unauthorized record writes
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
deepstreamIO deepstream.io >= 10.1.0, < 10.1.1 -

II. Public POCs for CVE-2026-63116

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III. Intelligence Information for CVE-2026-63116

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Patches & Fixes for CVE-2026-63116 (1)

Other References for CVE-2026-63116 (1)

IV. Related Vulnerabilities

Same product: deepstream.io
Same vendor: deepstreamIO
Same weakness: CWE-862

V. Comments for CVE-2026-63116

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