CVE-2026-57977

Received Received - Intake

Cross-Site Scripting (XSS) in Microsoft Edge Chromium

Publication date: 2026-07-03

Last updated on: 2026-07-03

Assigner: Microsoft Corporation

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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-03

Last Modified

2026-07-03

Generated

2026-07-04

AI Q&A

2026-07-04

EPSS Evaluated

N/A

NVD

CVE-2026-57977

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	edge	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

This vulnerability is a type of cross-site scripting (XSS) found in Microsoft Edge (Chromium-based). It occurs because the browser improperly neutralizes input during web page generation, which means that malicious input is not correctly handled or sanitized.

As a result, an unauthorized attacker can exploit this flaw to perform spoofing attacks over a network, potentially tricking users or systems by presenting false or misleading information.

Impact Analysis

This vulnerability can impact you by allowing attackers to perform spoofing attacks, which can lead to the presentation of deceptive content or interfaces.

Confidentiality impact: Low (some information could be exposed).
Integrity impact: High (attackers can manipulate or spoof content).
Availability impact: None.

Because the attack can be performed remotely over a network without privileges, it poses a significant risk to users who may be tricked into interacting with malicious content.

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