Medium · 4.7 CVE-2026-123840 EUVD-2026-118343GHSA-cw9v-29r9-xhg4

In JetBrains IntelliJ IDEA before 2026.3 hTML injection was possible in Remote Development editor tabs

Published Nov 6, 2026 · Updated Nov 6, 2026 · Assigned by JetBrains

Vendor: JetBrains Product: IntelliJ IDEA

Description

In JetBrains IntelliJ IDEA before 2026.3 hTML injection was possible in Remote Development editor tabs

Affected products

Vendor	Product	Affected	Fixed
JetBrains	IntelliJ IDEA	< 2026.3	2026.3

Advisories 1

WID-SEC-2026-4398 JetBrains IntelliJ IDEA: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 8, 2026

References

https://www.jetbrains.com/privacy-security/issues-fixed/