Improper Neutralization of Special Elements in Output Used by a Downstream Component in Microsoft Edge - CVE-2026-42838
Published: May 12, 2026
Vulnerability identifier: #VU131188
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-42838
CWE-ID: CWE-74
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary scripting code on the system.
The vulnerability exists due to improper input validation. A remote attacker can execute arbitrary scripting code on the system.
Affected software
Microsoft Edge
How to mitigate CVE-2026-42838
Install updates from vendor's website.
Microsoft Edge - update to 148.0.3967.55