1. Home
  2. CVE Database
  3. CVE-2026-78953
LOW · 3.1

CVE-2026-78953

Missing authorization in SiteIsolation in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted PDF file. (Chro...

Vulnerability Description

Missing authorization in SiteIsolation in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted PDF file. (Chromium security severity: Medium)

CVSS Score

3.1

LOW

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

Affected Products

VendorProductVersions
GoogleChrome< 152.0.7977.65

Related Weaknesses (CWE)

CWE-862

References

FAQ

What is CVE-2026-78953?

CVE-2026-78953 is a vulnerability with a CVSS score of 3.1 (LOW). Missing authorization in SiteIsolation in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted PDF file. (Chro...

How severe is CVE-2026-78953?

CVE-2026-78953 has been rated LOW with a CVSS base score of 3.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-78953?

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