CVE-2026-49383: CWE-611 in JetBrains IntelliJ IDEA
CVE-2026-49383 is a low-severity vulnerability in JetBrains IntelliJ IDEA before version 2026.1. It involves an XML External Entity (XXE) issue in the UI Designer form parser, which could allow limited information disclosure. The vulnerability requires local access and user interaction to exploit and does not impact integrity or availability.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-49383) affects JetBrains IntelliJ IDEA versions prior to 2026.1. It is classified as CWE-611 (Improper Restriction of XML External Entity Reference) and arises from the UI Designer form parser processing XML input insecurely, enabling XXE attacks. The CVSS 3.1 base score is 3.3, reflecting low impact with local attack vector, low complexity, no privileges required, but user interaction needed. The vulnerability impacts confidentiality only, with no effect on integrity or availability.
Potential Impact
The vulnerability could allow an attacker with local access and the ability to trigger the UI Designer form parser to perform an XXE attack, potentially leading to limited disclosure of local files or information. There is no indication of integrity or availability impact. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — no official fix or remediation level has been published by JetBrains at this time. Users should monitor the JetBrains advisory channels for updates and apply the official patch once available. Until then, avoid processing untrusted XML input in the UI Designer form parser and limit local access to trusted users.
CVE-2026-49383: CWE-611 in JetBrains IntelliJ IDEA
Description
CVE-2026-49383 is a low-severity vulnerability in JetBrains IntelliJ IDEA before version 2026.1. It involves an XML External Entity (XXE) issue in the UI Designer form parser, which could allow limited information disclosure. The vulnerability requires local access and user interaction to exploit and does not impact integrity or availability.
CVSS v3.1
Score 3.3low
Affected software
pkg:maven/com.jetbrains/intellij-ideaRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-49383) affects JetBrains IntelliJ IDEA versions prior to 2026.1. It is classified as CWE-611 (Improper Restriction of XML External Entity Reference) and arises from the UI Designer form parser processing XML input insecurely, enabling XXE attacks. The CVSS 3.1 base score is 3.3, reflecting low impact with local attack vector, low complexity, no privileges required, but user interaction needed. The vulnerability impacts confidentiality only, with no effect on integrity or availability.
Potential Impact
The vulnerability could allow an attacker with local access and the ability to trigger the UI Designer form parser to perform an XXE attack, potentially leading to limited disclosure of local files or information. There is no indication of integrity or availability impact. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — no official fix or remediation level has been published by JetBrains at this time. Users should monitor the JetBrains advisory channels for updates and apply the official patch once available. Until then, avoid processing untrusted XML input in the UI Designer form parser and limit local access to trusted users.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-05-29T18:07:59.485Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a19dc0ee29bf47b50ff869e
Added to database: 05/29/2026, 18:33:50 UTC
Last enriched: 06/05/2026, 21:22:15 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 101
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