CVE-2026-7978 — HIGH (8.1) — White Hats Nepal

Q: How severe is CVE-2026-7978?

CVE-2026-7978 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-7978?

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

Vulnerability 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)

CVSS Score

8.1

HIGH

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

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Google	Chrome	< 148.0.7778.96
Apple	Macos	-

Related Weaknesses (CWE)

CWE-693

References

https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.Vendor Advisory
https://issues.chromium.org/issues/497828892Issue TrackingPermissions Required

FAQ

What is CVE-2026-7978?

CVE-2026-7978 is a vulnerability with a CVSS score of 8.1 (HIGH). 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 sec...

How severe is CVE-2026-7978?

CVE-2026-7978 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-7978?

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