{"id":"CVE-2026-102878","title":"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","summary":"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 se…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","cwe":["CWE-346"],"vendor":"hangwin","product":"mcp-chrome-bridge","affected":["mcp-chrome-bridge <= 1.0.31"],"published":"2026-09-29","updated":"2026-09-29","sourceUpdated":"2026-09-29T21:17:18.297","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-102878","references":[{"url":"https://github.com/hangwin/mcp-chrome","label":"disclosure@vulncheck.com"},{"url":"https://github.com/hangwin/mcp-chrome/blob/v1.0.0/app/native-server/src/server/index.ts","label":"disclosure@vulncheck.com"},{"url":"https://github.com/hangwin/mcp-chrome/issues/384","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/mcp-chrome-bridge-through-1.0.31-cors-origin-bypass","label":"disclosure@vulncheck.com"},{"url":"https://github.com/hangwin/mcp-chrome/issues/384","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-09-29T20:18:47.075987Z"},"ingestedAt":"2026-09-29T20:46:06.443Z","slug":"CVE-2026-102878","body":"## Overview\n\nmcp-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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":57,"depthScoreParts":{"impact":44.6,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[]}