Security context

What an agent needs to avoid regressing past fixes and find the next vuln in this repo.

microsoft/playwright-mcp

              main @ 2d446f9
            

Fixes

CVEs

MEDIUM

Peak severity

Highlights

Authentication Bypass: 1 prior fix. Scrutinize any change in this area.

src/config.ts: most-fixed (1 issue). Treat as high-risk during review.

0 high-severity fixes in this history; regressions here are high-impact.

Recurring patterns

The bug types that recur here, drawn from past fixes, not open vulnerabilities.

Authentication Bypass: Inadequate session connection management can allow secondary clients to hijack existing Playwright/CDP sessions, permitting unauthorized browser manipulation. Prevention requires strictly rejecting secondary connection attempts to maintain exclusive session control.

Sandbox Bypass: Falsy CLI option checks can inadvertently disable the Chromium sandbox by default, leaving the host vulnerable to remote code execution via compromised web pages. Enforcement of explicit, strict boolean checks is required to keep the sandbox enabled.

Path Traversal: Unsanitized input parameters used in PDF or artifact generation allow directory traversal sequences to write files to arbitrary host locations. Input paths must be strictly sanitized against traversal sequences.