CVE-2026-49383
LowCVSS 3.3Exploitation Probability (EPSS)
Low risk1th percentile - higher than 1% of all known CVEs
Summary
In JetBrains IntelliJ IDEA before 2026.1, the UI Designer form parser is vulnerable to XXE (XML External Entity) attacks.
Risk Assessment
Attackers could read local files, perform SSRF, or cause denial of service via malicious XML.
Recommendation
Upgrade IntelliJ IDEA to version 2026.1 or later.
Other vulnerabilities in IntelliJ IDEA
See all- CVE-2026-64813Critical
In JetBrains IntelliJ IDEA before 2026.2, unauthorized settings modification was possible in a Remote Development session.
- CVE-2026-59792Critical
In JetBrains IntelliJ IDEA before 2026.1.4 and 2026.2, a vulnerability allowed code execution via path traversal in project workspace ID handling.
- CVE-2026-86504High
In JetBrains IntelliJ IDEA before 2026.2.2, missing project-trust confirmation before building a Dev Container allowed host-level code execution.
- CVE-2026-86502High
In JetBrains IntelliJ IDEA before 2026.2.2, missing TLS and authentication on the IJent gRPC server allowed local code execution on Remote Development hosts.
- CVE-2026-64814High
In IntelliJ IDEA before version 2026.2, there is a vulnerability allowing unauthorized file access during a Remote Development session. An attacker can access files they should not have permission to.
Original NVD description (English source)
In JetBrains IntelliJ IDEA before 2026.1 xXE in the UI Designer form parser was possible
Vulnerability data from NVD (NIST) · CISA KEV · EPSS