XML External Entity (XXE) Vulnerability in JetBrains IntelliJ IDEA

Publication date: 2026-05-29

Last updated on: 2026-06-01

Assigner: JetBrains s.r.o.

Description

In JetBrains IntelliJ IDEA before 2026.1 xXE in the UI Designer form parser was possible

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-05-29

Last Modified

2026-06-01

Generated

2026-07-09

AI Q&A

2026-05-29

EPSS Evaluated

2026-07-08

NVD

CVE-2026-49383

EUVD

EUVD-2026-33391

Affected Vendors & Products

Vendor	Product	Version / Range
jetbrains	intellij_idea	to 2026.1 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-611	The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.

Attack-Flow Graph

Executive Summary

This vulnerability is a XML External Entity (XXE) attack possibility in the UI Designer form parser of JetBrains IntelliJ IDEA versions before 2026.1.

Impact Analysis

The vulnerability has a low base CVSS score of 3.3, indicating limited impact. It allows local attackers with low privileges to exploit the UI Designer form parser via XXE, potentially leading to limited information disclosure.

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