What is CVE-2026-7977?

CVE-2026-7977 is a medium-severity vulnerability in Apple Macos, classified under Improper Privilege Management. CVSS score: 6.3/10. Published 2026-05-06.

How severe is CVE-2026-7977?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Privilege escalation in Apple Macos

CVE-2026-7977

Inappropriate implementation in Canvas in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to bypass same origin policy via a crafted HTML page. (Chromium security severity: Medium)

Vulnerability class: Privilege Escalation

EPSS: 0.000 (6.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L.

Affected products

Apple Macos
Google Chrome — versions 148.0.7778.96
Linux Linux_kernel
Microsoft Windows

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

chrome-cve-admin@google.com (Vendor Advisory)
chrome-cve-admin@google.com (Permissions Required, Issue Tracking)

Frequently asked questions

What is CVE-2026-7977?: CVE-2026-7977 is a medium-severity vulnerability in Apple Macos, classified under Improper Privilege Management. CVSS score: 6.3/10. Published 2026-05-06.
How severe is CVE-2026-7977?: Medium severity. CVSS v3 base score is 6.3 out of 10.