CVE-2026-42838: Microsoft Edge Chromium

Medium severity, CVSS 5.4. EPSS: 0.4% chance of exploitation in the next 30 days.

Improper neutralization of special elements in output used by a downstream component ('injection') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges over a network.

Affected products

• Microsoft Edge Chromium: before 148.0.3967.55 (fixed in 148.0.3967.55)

Published 2026-05-12. Last modified 2026-06-17.