Vulnerability in Hangwin Mcp-Chrome-Bridge
CVE-2026-102878
mcp-chrome-bridge through 1.0.31 contains an origin validation error in the native-server HTTP API that allows attackers to bypass CORS restrictions. Attackers can craft malicious web pages that make cross-origin requests to the local server and invoke browser automation tools including script execution, page content reading, and screenshot capture.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/hangwin/mcp-chrome (product)
- github.com/hangwin/mcp-chrome/blob/v1.0.0/app/native-server/src/server/index.ts (technical-description)
- github.com/hangwin/mcp-chrome/issues/384 (issue-tracking)
- www.vulncheck.com/advisories/mcp-chrome-bridge-through-1.0.31-cors-origin-bypass (third-party-advisory)
Frequently asked questions
- What is CVE-2026-102878?
- CVE-2026-102878 is a high-severity vulnerability in Hangwin Mcp-Chrome-Bridge, classified under Origin Validation Error. CVSS score: 8.1/10. Published 2026-09-29.
- How severe is CVE-2026-102878?
- High severity. CVSS v3 base score is 8.1 out of 10.