---
id: CVE-2026-92780
title: >-
  KnowStreaming through 3.4.1 fails to enforce role-based access control on REST
  API endpoints, allowing any authenticated user to access protected
  functionality
summary: >-
  KnowStreaming through 3.4.1 fails to enforce role-based access control on REST
  API endpoints, allowing any authenticated user to access protected
  functionality. Attackers can call identity-management endpoints to create
  administrator acc…
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: didi
product: KnowStreaming
affected:
  - KnowStreaming <= 3.4.1
published: '2026-09-16'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T20:48:01.433'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92780'
references:
  - url: 'https://github.com/didi/KnowStreaming'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/didi/KnowStreaming/blob/v3.4.0/km-rest/src/main/java/com/xiaojukeji/know/streaming/km/rest/interceptor/PermissionInterceptor.java#L46-L74
    label: disclosure@vulncheck.com
  - url: 'https://github.com/didi/KnowStreaming/issues/1263'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/knowstreaming-through-3.4.1-missing-authorization-on-the-rest-api
    label: disclosure@vulncheck.com
  - url: 'https://github.com/didi/KnowStreaming/issues/1263'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00523
epssPercentile: 0.41879
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-17T15:02:41.319448Z'
ingestedAt: '2026-09-16T21:05:36.892Z'
---

## Overview

KnowStreaming through 3.4.1 fails to enforce role-based access control on REST API endpoints, allowing any authenticated user to access protected functionality. Attackers can call identity-management endpoints to create administrator accounts or grant themselves administrative privileges without proper authorization.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.