Vulnerability in Tencent Browserskill
CVE-2026-94111
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L.
EPSS exploit prediction
EPSS: 0.001 (3.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/Tencent/BrowserSkill/issues/273 (issue-tracking)
- github.com/Tencent/BrowserSkill/blob/cli-v0.3.0/crates/bsk-cli/src/daemon/ws.rs (technical-description)
- www.vulncheck.com/advisories/tencent-browserskill-through-0.3.0-origin-validati… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-94111?
- CVE-2026-94111 is a medium-severity vulnerability in Tencent Browserskill, classified under Origin Validation Error. CVSS score: 6.6/10. Published 2026-09-20.
- How severe is CVE-2026-94111?
- Medium severity. CVSS v3 base score is 6.6 out of 10.