What is CVE-2026-7939?

CVE-2026-7939 is a medium-severity vulnerability in Apple Macos, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-05-06.

How severe is CVE-2026-7939?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Apple Macos

CVE-2026-7939

Inappropriate implementation in SanitizerAPI in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to inject arbitrary scripts or HTML (UXSS) via a crafted HTML page. (Chromium security severity: Medium)

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (7.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

Affected products

Apple Macos
Google Chrome — versions 148.0.7778.96
Linux Linux_kernel
Microsoft Windows

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

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

Frequently asked questions

What is CVE-2026-7939?: CVE-2026-7939 is a medium-severity vulnerability in Apple Macos, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-05-06.
How severe is CVE-2026-7939?: Medium severity. CVSS v3 base score is 5.4 out of 10.