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Vulnerability record · CVE-2026-77490 · published 11 September 2026

CVE-2026-77490: Microsoft edge chromium cross-site scripting vulnerability

Microsoft · Edge Chromium

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.

6.1 CVSS 3.1 Medium EPSS 0.41% · top 67.0% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score
0.41%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
25 Sep 2026Last modified by NVD

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:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77490 Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-77490), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.