CVE-2026-94111

MEDIUMCVSS 6.6

Description

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.

Timeline

Published:September 20th, 2026 12:17 PM

Last modified:September 22nd, 2026 8:43 PM

CVSS Scoring

CVSS v3: 6.6 (MEDIUM)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L

Weaknesses (CWE)

CWE-346

References & Reports

Advisories, patches, and third-party reports

https://github.com/Tencent/BrowserSkill/blob/cli-v0.3.0/crates/bsk-cli/src/daemon/ws.rs#L36-L57
https://github.com/Tencent/BrowserSkill/issues/273
https://www.vulncheck.com/advisories/tencent-browserskill-through-0.3.0-origin-validation-error-in-local-websocket-daemon

Source: NIST NVD · Data may lag official sources by up to one minute