CVE-2026-102878
mcp-chrome-bridge through 1.0.31 contains an origin validation error in the native-server HTTP API…
- Risk score
- 56/100
- CVSS
- 8.1 v3.1
- Exploit chance (30 days)
- 0.2%
- Published
- 29 Sep 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 …
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 8.1 high
- Remotely exploitable without logging in
References
- https://github.com/hangwin/mcp-chrome
- https://github.com/hangwin/mcp-chrome/blob/v1.0.0/app/native-server/src/server/index.ts
- https://github.com/hangwin/mcp-chrome/issues/384
- https://www.vulncheck.com/advisories/mcp-chrome-bridge-through-1.0.31-cors-origin-bypass
- https://github.com/hangwin/mcp-chrome/issues/384
Original description
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.
Last activity 29 Sep 2026. Patch Forecast updates every hour.