What is CVE-2026-45494?

CVE-2026-45494 is a medium-severity vulnerability in Microsoft Edge_chromium, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-05-18.

How severe is CVE-2026-45494?

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

XSS in Microsoft Edge_chromium

CVE-2026-45494

Microsoft Edge (Chromium-based) Spoofing Vulnerability

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (15.2th 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

Microsoft Edge_chromium
Microsoft Edge (Chromium-based) — versions 1.0.0.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Microsoft Edge (Chromium-based) Spoofing Vulnerability (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-45494?: CVE-2026-45494 is a medium-severity vulnerability in Microsoft Edge_chromium, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-05-18.
How severe is CVE-2026-45494?: Medium severity. CVSS v3 base score is 5.4 out of 10.