CVE-2026-102878
mcp-chrome-bridge through 1.0.31 CORS Origin Bypass
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-346 |
| Vendor | hangwin |
| Product | mcp-chrome-bridge |
| Published | Sep 29, 2026 |
| Last Updated | Sep 29, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
hangwin / mcp-chrome-bridge
0 ≤ 1.0.31
References
github.com: https://github.com/hangwin/mcp-chrome/issues/384 github.com: https://github.com/hangwin/mcp-chrome/blob/v1.0.0/app/native-server/src/server/index.ts github.com: https://github.com/hangwin/mcp-chrome vulncheck.com: https://www.vulncheck.com/advisories/mcp-chrome-bridge-through-1.0.31-cors-origin-bypass
Credits
George Chen