CVE-2026-77490

Medium

Description

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.

SeverityMedium

CVSS6.1

Exploit probability—

Product

Microsoft Edge Chromium

PublishedSep 11, 2026

First seenSep 11, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

microsoft edge_chromium151.0.4129.107 or later

Patches

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77490

Affected products

Product	Affected versions	Fixed in
microsoft edge_chromium	v < 151.0.4129.107	151.0.4129.107

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