CVE-2026-123857
Received Received - Intake

Remote Code Execution in JetBrains PhpStorm

Publication date: 2026-11-06

Last updated on: 2026-11-06

Assigner: JetBrains s.r.o.

Description
In JetBrains PhpStorm before 2026.3 xXE was possible in untrusted projects via PHPMD ruleset autodetection

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Meta Information

Published
2026-11-06
Last Modified
2026-11-06
Generated
2026-11-06
AI Q&A
2026-11-06
EPSS Evaluated
N/A
NVD
CVE-2026-123857
EUVD
EUVD-2026-118317

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
JetBrains PhpStorm From 0 (inc) to 2026.3 (exc)

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Exploitability

CWE
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KEV
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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.

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Executive Summary

This vulnerability in JetBrains PhpStorm before version 2026.3 allows an external entity attack (xXE) in untrusted projects through PHPMD ruleset autodetection. This means an attacker could potentially exploit the autodetection feature to perform XML External Entity (XXE) attacks.

Impact Analysis

The vulnerability could allow an attacker to read sensitive files or execute unauthorized actions on your system if you are using an affected version of PhpStorm with untrusted projects. It may lead to information disclosure or other security breaches depending on the project's configuration.

Mitigation Strategies

Update JetBrains PhpStorm to version 2026.3 or later to address the XXE vulnerability in untrusted projects via PHPMD ruleset autodetection.

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