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

Source: https://junglewise.ai/threats/cve-2026-94111-tencent-browserskill-through-0-3-0-contains-an-authentication  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-20. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

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](https://junglewise.ai/threats/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

- [https://registry.npmjs.org/](https://registry.npmjs.org/)
- [https://github.com/Tencent/BrowserSkill/blob/cli-v0.3.0/crates/bsk-cli/src/daemon/ws.rs](https://github.com/Tencent/BrowserSkill/blob/cli-v0.3.0/crates/bsk-cli/src/daemon/ws.rs)

## Related threats

- [Tencent BrowserSkill authentication bypass in daemon socket](https://junglewise.ai/threats/cve-2026-125361-tencent-browserskill-through-0-4-2-contains-a-missing)