CVE-2026-45494

Microsoft Edge (Chromium-based) Spoofing Vulnerability

CVE-2026-45494 is fixed in 4 products on 2 platforms, first by Microsoft Edge 148.0.3967.70, released May 15, 2026. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.

UrgentFixed on 2 platforms

CVSS

6.1

Moderate

Exploitation

More likely

Vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0030

23rd percentile

Microsoft Edge (Chromium-based) Spoofing Vulnerability

Where it's fixed

Product	Fixed in	Fix	Released
Windows apps
Microsoft Edge	148.0.3967.70	Microsoft Edge 148.0.3967.70	May 15, 2026
Microsoft Edge Beta	151.0.4129.59	Microsoft Edge Beta 151.0.4129.59	Jul 31, 2026
Microsoft Edge Dev	152.0.4167.0	Microsoft Edge Dev 152.0.4167.0	Jul 20, 2026
Microsoft Edge WebView2 Runtime	148.0.3967.70	Microsoft Edge WebView2 Runtime 148.0.3967.70	May 15, 2026
macOS
Microsoft Edge	148.0.3967.83	Microsoft Edge 148.0.3967.83	May 21, 2026

Details

Published
May 15, 2026
Weakness
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45494

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