---
id: CVE-2026-123857
title: >-
  In JetBrains PhpStorm before 2026.3 xXE was possible in untrusted projects via
  PHPMD ruleset autodetection
summary: >-
  In JetBrains PhpStorm before 2026.3 xXE was possible in untrusted projects via
  PHPMD ruleset autodetection
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-611
vendor: JetBrains
product: PhpStorm
affected:
  - PhpStorm < 2026.3
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T16:43:06.438618Z'
published: '2026-11-06'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T16:45:17.726Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-123857'
references:
  - url: 'https://www.jetbrains.com/privacy-security/issues-fixed/'
tags:
  - cve.org
ingestedAt: '2026-11-06T16:57:43.131Z'
---

## Overview

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

## Affected

- `PhpStorm < 2026.3`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.