Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Edge (Chromium-based) allows an unauthorized… (CVE-2026-77490)
A cross-site scripting (XSS) vulnerability exists in Microsoft Edge (Chromium-based) due to improper neutralization of input during web page generation. This flaw allows an unauthorized attacker to perform spoofing attacks over a network. The vulnerability has a medium severity rating with a CVSS score of 6.1.
AI Analysis
Technical Summary
CVE-2026-77490 describes a cross-site scripting vulnerability in Microsoft Edge (Chromium-based) where improper input neutralization during web page generation enables an attacker to conduct spoofing attacks. The vulnerability can be exploited remotely without privileges and requires user interaction. It impacts confidentiality and integrity but not availability.
Potential Impact
Successful exploitation can lead to limited confidentiality and integrity impacts through spoofing attacks, potentially misleading users or exposing sensitive information. There is no impact on system availability. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch information is provided at this time.
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Edge (Chromium-based) allows an unauthorized… (CVE-2026-77490)
Description
A cross-site scripting (XSS) vulnerability exists in Microsoft Edge (Chromium-based) due to improper neutralization of input during web page generation. This flaw allows an unauthorized attacker to perform spoofing attacks over a network. The vulnerability has a medium severity rating with a CVSS score of 6.1.
CVSS v3.1
Score 6.1medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-77490 describes a cross-site scripting vulnerability in Microsoft Edge (Chromium-based) where improper input neutralization during web page generation enables an attacker to conduct spoofing attacks. The vulnerability can be exploited remotely without privileges and requires user interaction. It impacts confidentiality and integrity but not availability.
Potential Impact
Successful exploitation can lead to limited confidentiality and integrity impacts through spoofing attacks, potentially misleading users or exposing sensitive information. There is no impact on system availability. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch information is provided at this time.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-v529-x64v-phrj
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-77490"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aa4a03155bf5e2cf5a87202
Added to database: 09/12/2026, 00:43:29 UTC
Last enriched: 09/12/2026, 01:27:00 UTC
Last updated: 09/12/2026, 03:01:23 UTC
Views: 4
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