CVE-2026-102878: Origin Validation Error in hangwin mcp-chrome-bridge
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.
AI Analysis
Technical Summary
The vulnerability in mcp-chrome-bridge (<=1.0.31) stems from improper origin validation in its native-server HTTP API. This allows attackers to bypass Cross-Origin Resource Sharing (CORS) protections, enabling crafted malicious web pages to perform cross-origin requests to the local server. Exploitation can lead to unauthorized use of browser automation tools, including executing scripts, accessing page content, and taking screenshots, thereby compromising user privacy and security.
Potential Impact
Successful exploitation can lead to unauthorized script execution, data exposure through reading page content, and capturing screenshots via browser automation tools. This compromises the confidentiality and integrity of user data and browser sessions. The CVSS 4.0 score of 8.6 (high severity) reflects the network attack vector, low attack complexity, no privileges required, and high impact on confidentiality and integrity.
Mitigation Recommendations
No patch or official fix information is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should avoid exposing the mcp-chrome-bridge service to untrusted networks and restrict access to trusted origins only.
CVE-2026-102878: Origin Validation Error in hangwin mcp-chrome-bridge
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.
CVSS v4.0
Score 8.6high
Affected software
hangwin
mcp-chrome-bridge
pkg:github/hangwin/mcp-chrome-bridgeRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in mcp-chrome-bridge (<=1.0.31) stems from improper origin validation in its native-server HTTP API. This allows attackers to bypass Cross-Origin Resource Sharing (CORS) protections, enabling crafted malicious web pages to perform cross-origin requests to the local server. Exploitation can lead to unauthorized use of browser automation tools, including executing scripts, accessing page content, and taking screenshots, thereby compromising user privacy and security.
Potential Impact
Successful exploitation can lead to unauthorized script execution, data exposure through reading page content, and capturing screenshots via browser automation tools. This compromises the confidentiality and integrity of user data and browser sessions. The CVSS 4.0 score of 8.6 (high severity) reflects the network attack vector, low attack complexity, no privileges required, and high impact on confidentiality and integrity.
Mitigation Recommendations
No patch or official fix information is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should avoid exposing the mcp-chrome-bridge service to untrusted networks and restrict access to trusted origins only.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-29T17:33:19.455Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6abc1a5e680226ef6837a59a
Added to database: 09/29/2026, 20:06:54 UTC
Last enriched: 09/29/2026, 20:21:20 UTC
Last updated: 09/30/2026, 03:03:21 UTC
Views: 10
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