CVE-2025-9611 - Microsoft Playwright MCP Server < 0.0.40 DNS Rebinding via Missing Origin Header Validation

CVE-2025-9611 - Microsoft Playwright MCP Server < 0.0.40 DNS Rebinding via Missing Origin Header Validation

https://cvefeed.io/rssfeed/latest.atom / Wed, 01/07/2026 - 16:56
CVE ID : CVE-2025-9611
Published : Jan. 7, 2026, 12:17 p.m. | 2 hours, 40 minutes ago
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.
Severity: 7.2 | HIGH
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Kenya Education Network CERT(KENET-CERT) is a Cybersecurity Emergency Response Team and Co-ordination Center operated by the National Research and Education Network of Kenya. KENET-CERT coordination center promotes awareness on cybersecurity incidences as well as coordinates and assists member institutions in responding effectively to cyber security threats and incidences. KENET-CERT works closely with Kenya's National CIRT coordination center (CIRT/CC) as a sector CIRT for the academic institutions. KENET promotes use of ICT in Teaching, Learning and Research in Higher Education Institutions in Kenya. KENET aims to interconnect all the Universities, Tertiary and Research Institutions in Kenya by setting up a cost effective and sustainable private network with high speed access to the global Internet. KENET also facilitates electronic communication among students and faculties in member institutions, share learning and teaching resources by collaboration in Research and Development of Educational content.