---
id: CVE-2026-94111
title: >-
  Tencent BrowserSkill through 0.3.0 contains an authentication bypass
  vulnerability in the local daemon WebSocket origin validation that accepts any
  chrome-extension origin with 32 characters in range a-p
summary: >-
  Tencent BrowserSkill through 0.3.0 contains an authentication bypass
  vulnerability in the local daemon WebSocket origin validation that accepts any
  chrome-extension origin with 32 characters in range a-p. Attackers can
  register a malicio…
severity: medium
cvss: 6.6
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L'
cwe:
  - CWE-346
vendor: Tencent
product: BrowserSkill
affected:
  - BrowserSkill <= 0.3.0
published: '2026-09-20'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T20:43:58.793'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-94111'
references:
  - url: >-
      https://github.com/Tencent/BrowserSkill/blob/cli-v0.3.0/crates/bsk-cli/src/daemon/ws.rs#L36-L57
    label: disclosure@vulncheck.com
  - url: 'https://github.com/Tencent/BrowserSkill/issues/273'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/tencent-browserskill-through-0.3.0-origin-validation-error-in-local-websocket-daemon
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
epss: 0.00135
epssPercentile: 0.0239
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-21T14:16:46.398111Z'
ingestedAt: '2026-09-20T12:21:05.902Z'
---

## Overview

Tencent BrowserSkill through 0.3.0 contains an authentication bypass vulnerability in the local daemon WebSocket origin validation that accepts any chrome-extension origin with 32 characters in range a-p. Attackers can register a malicious extension as a browser client to intercept and manipulate page content, DOM, and screenshots returned to the AI agent.

## Remediation

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