CVE-2026-94111: Tencent BrowserSkill authentication bypass in WebSocket origin validation

CVE-2026-94111 · Severity: medium · CVSS 6.6 · Published 2026-09-20

Tencent BrowserSkill is an AI automation tool that controls web browsers and captures page content. A flaw in its local daemon's WebSocket security allows attackers to register a malicious browser extension that passes authentication checks, enabling them to intercept and alter page data, DOM elements, and screenshots seen by the AI agent.

Vendors: Tencent.

Quick answers

Is CVE-2026-94111 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-94111 being exploited in the wild.
How severe is CVE-2026-94111?
Medium severity, with a CVSS score of 6.6, published 20 September 2026.
Which products and versions are affected?
Tencent BrowserSkill through 0.3.0.
Is there a fix for CVE-2026-94111?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-94111 attacked?
It is attacked over the network.
Am I affected by CVE-2026-94111?
Check whether you run Tencent BrowserSkill at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is an authentication bypass in the WebSocket origin validation of BrowserSkill's local daemon, which incorrectly accepts any chrome-extension origin containing 32 characters in the a-p range. An attacker can register a malicious extension that connects to the daemon as a trusted browser client without proper authentication, gaining the ability to intercept, manipulate, and exfiltrate page content and screenshots.

Affected products

  • Tencent BrowserSkill through 0.3.0

Timeline

  • 2026-09-20: disclosed

References

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