CVE-2026-94111CWE-346

CVE-2026-94111

Medium · published September 20, 2026

CVSS v3.1
6.6
EPSS
0%
Percentile
2.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.6 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
CVSS v4.0
6.9 · CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N
EPSS
0.00135 · 2.7th percentile
Weakness
CWE-346 · Origin Validation Error
Published
2026-09-20T16:17Z
References (3)
https://github.com/Tencent/BrowserSkill/blob/cli-v0.3.0/crates/bsk-cli/src/daemon/ws.rs#L36-L57 · [email protected]https://github.com/Tencent/BrowserSkill/issues/273 · [email protected]https://www.vulncheck.com/advisories/tencent-browserskill-through-0.3.0-origin-validation-error-in-local-websocket-daemon · [email protected]
EPSS history
Timeline
  • 22 SEP 03:44Z
    EPSS moved — → 0%
    epss
  • 20 SEP 11:56Z
    Tencent BrowserSkill through 0.3.0 Origin Validation Error in Local WebSocket Daemon
    cvelistv5