7.2

CVE-2025-9611: microsoft playwright Exposed Dangerous Method or Function

CVSS: 7.2v4.0HighDeferred
AliasesGHSA-6fg3-hvw7-2fwqGHSA-8rgw-6xp9-2fg3
Published 07-01-2026Last modified 08-10-2026
Open JSON

Vulnerability summary

CVE-2025-9611 is a high (CVSS 7.2) Exposed Dangerous Method or Function vulnerability in microsoft playwright. EPSS estimates a 1.22% chance of exploitation in the next 30 days, higher than 68.2% of scored vulnerabilities.

Overall risk
29/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.2/10
010
High · v4.0 (CVE.org)
EPSS score
1.22%
0%100%
Low · -0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 07-01-2026
    PublishedVulnerability first disclosed.
  2. 08-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

1.22%

Chance of exploitation in the next 30 days

Percentile

68%

Versus all other CVEs

30-day change

-0.02 pp

From 1.24% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.22%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

@playwright1 product
  • mcp< 0.0.40
Microsoft1 product

2 vendors · 2 products

References

7 links