Cross-site scripting in Microsoft Edge - CVE-2026-57977
Published: July 17, 2026
Vulnerability identifier: #VU138351
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-57977
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform spoofing.
The vulnerability exists due to cross-site scripting in Microsoft Edge (Chromium-based) when generating web pages. A remote attacker can host a specially crafted website and convince a user to visit it to perform spoofing.
User interaction is required. The user must visit an attacker-controlled webpage and perform two tap gestures that cause autofill to activate.
Affected software
Microsoft Edge
How to mitigate CVE-2026-57977
Install security update from vendor's website.
Microsoft Edge - update to 150.0.4078.48