CVE-2026-102878 mcp-chrome-bridge - CORS Misconfiguration

mcp-chrome-bridge through 1.0.31 contains a CORS misconfiguration caused by an origin validation error in the native-server HTTP API, letting attackers bypass CORS restrictions to execute scripts, read page content, and capture screenshots remotely, exploit requires crafted malicious web pages.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.24% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
CORS Misconfiguration
Impact
Client Script Exec, Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Published
29 September 2026
Updated
15 October 2026
Weakness
CWE-346

Vendor fix

Update to the latest version beyond 1.0.31.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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