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CVE

GHSA-6fg3-hvw7-2fwq

Microsoft Playwright MCP Server vulnerable to DNS Rebinding Attack; Allows Attackers Access to All Server Tools
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CVE

GHSA-6fg3-hvw7-2fwq

Microsoft Playwright MCP Server vulnerable to DNS Rebinding Attack; Allows Attackers Access to All Server Tools

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.2
-
4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
7.6
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

Related Resources

No items found.

References

https://github.com/JLLeitschuh/security-research/security/advisories/GHSA-8rgw-6xp9-2fg3, https://nvd.nist.gov/vuln/detail/CVE-2025-9611, https://github.com/microsoft/playwright-mcp/issues/1206, https://github.com/microsoft/playwright/commit/1313fbd, https://github.com/microsoft/playwright-mcp, https://msrc.microsoft.com/report/vulnerability/VULN-164412, https://www.vulncheck.com/advisories/microsoft-playwright-mcp-server-dns-rebinding-via-missing-origin-header-validation

Severity

7.6

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.6
EPSS Probability
0.0011%
EPSS Percentile
0.3011%
Introduced Version
0,1.56.0-alpha-1756475278000,1.56.0-alpha-2025-08-21,1.55.0-alpha-2025-08-16,0.0.36-alpha-2025-09-04,0.0.35-alpha-2025-08-27,0.0.32,0.0.16,0.0.7
Fix Available
0.0.40,1.56.0-alpha-1758747822000,1.56.0-alpha-2025-09-24

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