What is CVE-2026-53766?

CVE-2026-53766 is a medium-severity vulnerability in Chromedevtools Chrome-devtools-mcp, classified under Path Traversal. CVSS score: 6.1/10. Published 2026-06-24.

How severe is CVE-2026-53766?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Path Traversal in Chromedevtools Chrome-devtools-mcp

CVE-2026-53766

Chrome DevTools for agents (chrome-devtools-mcp) lets your coding agent control and inspect a live Chrome browser. From 0.24.0 until 1.1.0, McpContext.validatePath() enforces workspace roots by checking whether path.resolve(filePath) textu…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.001 (1.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L.

Affected products

Chromedevtools Chrome-devtools-mcp — versions >= 0.24.0, < 1.1.0
Google Chrome-devtools-mcp

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2026-53766?: CVE-2026-53766 is a medium-severity vulnerability in Chromedevtools Chrome-devtools-mcp, classified under Path Traversal. CVSS score: 6.1/10. Published 2026-06-24.
How severe is CVE-2026-53766?: Medium severity. CVSS v3 base score is 6.1 out of 10.