CVE-2026-7978

HIGH

Google Chrome < 148.0.7778.96 - OS-Level Privilege Escalation via Companion

Title source: llm

Description

Inappropriate implementation in Companion in Google Chrome on Mac prior to 148.0.7778.96 allowed a remote attacker to perform OS-level privilege escalation via malicious network traffic. (Chromium security severity: Medium)

References (2)

Core 2

Core References

https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html

https://issues.chromium.org/issues/497828892

Scores

CVSS v3 8.1

EPSS 0.0012

EPSS Percentile 30.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-693

Status published

Products (2)

google/chrome < 148.0.7778.96

Google/Chrome 148.0.7778.96

Published May 06, 2026

Tracked Since May 07, 2026