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MEDIUM · 6.5

CVE-2026-17854

Insufficient policy enforcement in WebMCP in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to bypass same origin policy via a crafted HTML page. (Chromium security severity: Medium)

Vulnerability Description

Insufficient policy enforcement in WebMCP in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to bypass same origin policy via a crafted HTML page. (Chromium security severity: Medium)

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE

Affected Products

VendorProductVersions
GoogleChrome< 151.0.7922.72

Related Weaknesses (CWE)

CWE-346

References

FAQ

What is CVE-2026-17854?

CVE-2026-17854 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Insufficient policy enforcement in WebMCP in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to bypass same origin policy via a crafted HTML page. (Chromium security severity: Medium)

How severe is CVE-2026-17854?

CVE-2026-17854 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-17854?

Check the references section above for vendor advisories and patch information. Affected products include: Google Chrome.