CVE-2026-7978

State: Published
Severity: 8.1 High
Published: May 6, 2026
Updated: May 7, 2026
Reserved: May 5, 2026

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)

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-693 Protection Mechanism Failure

Affected Products

Product	Versions
ChromeGoogle	148.0.7778.96 to before 148.0.7778.96Affected

References

https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html
https://issues.chromium.org/issues/497828892

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