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.
Metrics
Affected Vendors & Products
References
History
Wed, 07 Jan 2026 15:15:00 +0000
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ssvc
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Wed, 07 Jan 2026 10:45:00 +0000
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Microsoft
Microsoft playwright |
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Microsoft
Microsoft playwright |
Wed, 07 Jan 2026 04:45:00 +0000
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| Description | 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. | |
| Title | Microsoft Playwright MCP Server < 0.0.40 DNS Rebinding via Missing Origin Header Validation | |
| Weaknesses | CWE-749 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-01-07T14:25:19.390Z
Reserved: 2025-08-28T15:34:36.069Z
Link: CVE-2025-9611
Updated: 2026-01-07T14:25:14.799Z
Status : Received
Published: 2026-01-07T12:17:06.697
Modified: 2026-01-07T12:17:06.697
Link: CVE-2025-9611
No data.
OpenCVE Enrichment
Updated: 2026-01-07T10:08:03Z