Vulnerability · Published Sep 20, 2026 · Assigned by VulnCheck
CVE-2026-94111Tencent BrowserSkill through 0.3.0 Origin Validation Error in Local WebSocket Daemon
Medium 6.6
In plain English
A medium-severity security flaw in BrowserSkill from Tencent. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).
Severity (CVSS 3.1)6.6Medium
Exploit odds (30 days)0.1%top 97.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Tencent | BrowserSkill | 0 – through 0.3.0 |
Weakness: CWE-346 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
References
- https://github.com/Tencent/BrowserSkill/issues/273 issue-tracking
- https://github.com/Tencent/BrowserSkill/blob/cli-v0.3.0/crates/bsk-cli/src/daemon/ws.rs#L36-L57 technical-description
- VulnCheck Advisory: Tencent BrowserSkill through 0.3.0 Origin Validation Error in Local WebSocket Daemon third-party-advisory