CVE-2026-102878CWE-346

CVE-2026-102878

High · published September 30, 2026

CVSS v3.1
8.1
EPSS
0%
Percentile
13.7
In the wild
Unconfirmed
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 reading, and screenshot capture.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CVSS v4.0
8.6 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00235 · 13.7th percentile
Weakness
CWE-346 · Origin Validation Error
Published
2026-09-30T00:17Z
References (5)
https://github.com/hangwin/mcp-chrome · [email protected]https://github.com/hangwin/mcp-chrome/blob/v1.0.0/app/native-server/src/server/index.ts · [email protected]https://github.com/hangwin/mcp-chrome/issues/384 · [email protected]https://www.vulncheck.com/advisories/mcp-chrome-bridge-through-1.0.31-cors-origin-bypass · [email protected]https://github.com/hangwin/mcp-chrome/issues/384 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 01 OCT 03:44Z
    EPSS moved — → 0%
    epss
  • 29 SEP 20:01Z
    mcp-chrome-bridge through 1.0.31 CORS Origin Bypass
    cvelistv5