High
Microsoft Playwright MCP Server < 0.0.40 DNS Rebinding via Missing Origin Header Validation
Microsoft Playwright MCP Server versions prior to 0.0.40 fails to validate the Origin header on incoming connections. This allows an attacker to perform a DNS rebinding attack via a victim’s web browser and send unauthorized requests to a locally running MCP server, resulting in unintended invocation of MCP tool endpoints.
Announced Source revision 1
Original source ↗CVE-2025-9611
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2025-9611
Playwright
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/microsoft/playwright",
"vendor": "Microsoft",
"product": "Playwright",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "0.0.40",
"versionType": "semver"
}
],
"packageURL": "pkg:npm/%40playwright/mcp",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2025-9611
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #12653 · Revision 1
- Added to Heist Feed
- Publisher date