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MEDIUM · 4.3

CVE-2026-17870

Insufficient validation of untrusted input in Cast in Google Chrome prior to 151.0.7922.72 allowed an attacker on the local network segment to leak cross-origin data via malicious network traffic. (Ch...

Vulnerability Description

Insufficient validation of untrusted input in Cast in Google Chrome prior to 151.0.7922.72 allowed an attacker on the local network segment to leak cross-origin data via malicious network traffic. (Chromium security severity: Medium)

CVSS Score

4.3

MEDIUM

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

Affected Products

VendorProductVersions
GoogleChrome< 151.0.7922.72

Related Weaknesses (CWE)

CWE-20

References

FAQ

What is CVE-2026-17870?

CVE-2026-17870 is a vulnerability with a CVSS score of 4.3 (MEDIUM). Insufficient validation of untrusted input in Cast in Google Chrome prior to 151.0.7922.72 allowed an attacker on the local network segment to leak cross-origin data via malicious network traffic. (Ch...

How severe is CVE-2026-17870?

CVE-2026-17870 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-17870?

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