CVE-2026-94111
Tencent BrowserSkill through 0.3.0 Origin Validation Error in Local WebSocket Daemon
CVSS Score
6.6
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-346 |
| Vendor | tencent |
| Product | browserskill |
| Published | Sep 20, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
Low
Affected Versions
Tencent / BrowserSkill
0 ≤ 0.3.0
References
github.com: https://github.com/Tencent/BrowserSkill/issues/273 github.com: https://github.com/Tencent/BrowserSkill/blob/cli-v0.3.0/crates/bsk-cli/src/daemon/ws.rs#L36-L57 vulncheck.com: https://www.vulncheck.com/advisories/tencent-browserskill-through-0.3.0-origin-validation-error-in-local-websocket-daemon
Credits
George Chen