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CVSS 8.3 · HIGH

CVE-2026-7963

Inappropriate implementation in ServiceWorker in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)

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Analysis

Chrome is the dominant browser used by developers and end-users alike. A sandbox escape is a high-impact event because it allows an attacker to bypass the security layers that isolate web content from the host operating system.

Severity

Score: 8.3(HIGH)
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
AV: NETWORK
AC: HIGH
PR: NONE
UI: REQUIRED
S: CHANGED
C: HIGH
I: HIGH
A: HIGH
Weakness (CWE): CWE-693

EPSS

No EPSS score yet (CVE may be too fresh).

Affects

google:chromeapple:macoslinux:linux_kernelmicrosoft:windows

Technical description

Inappropriate implementation in ServiceWorker in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)

Published: 5/6/2026, 7:16:46 PM
Last modified: 5/7/2026, 2:02:48 AM

References

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