Cross-Site Scripting Vulnerability in Microsoft Edge by Microsoft
CVE-2026-77490

6.1MEDIUM

Key Information:

Vendor

Microsoft
Status
Microsoft Edge (chromium-based)
Vendor
CVE Published:
11 September 2026

What is CVE-2026-77490?

A vulnerability exists in Microsoft Edge (Chromium-based) due to improper neutralization of user input during web page generation. This flaw can be exploited by unauthorized attackers to perform spoofing attacks across a network, potentially compromising user data and integrity. It is crucial to apply the latest patches from Microsoft to mitigate this risk.

Affected Version(s)

Microsoft Edge (Chromium-based) 1.0.0.0 < 151.0.4129.107

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.