CVE-2026-77490: Microsoft Edge (Chromium-based) Spoofing Vulnerability
Published Sep 11, 2026
·Updated
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.
Other sources
Microsoft Edge (Chromium-based) Spoofing Vulnerability
— Microsoft
Affected Software
3 affected componentsFixes available
Microsoft Microsoft Edge
Microsoft Edge<151.0.4129.107
Microsoft Edge (Chromium-based)<151.0.4129.107
151.0.4129.107
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 151.0.4129.107
Event History
Sep 11, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·02:00 PM
DescriptionAffected Software
CVE Published
via MITRE·07:37 PM
Data Sourced
via MITRE·07:37 PM
DescriptionSeverity
Frequently Asked Questions
1
What does an attacker need to exploit this issue?
The attacker can attempt exploitation over a network without prior privileges, but user interaction is required. The available data identifies the weakness as cross-site scripting leading to spoofing.
2
What is the likely impact if exploitation succeeds?
The reported impact is limited confidentiality and integrity impact, with no availability impact. The vulnerability is categorized as a spoofing issue.