CVE-2026-45071

Symfony: XXE (Local File Disclosure) in DomCrawler::addXmlContent() via validateOnParse = true

Published: Jul 14, 2026Updated: Jul 15, 2026 Sources: CVE List NVDCWE-611

7.5HIGH

Description

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, Crawler::addXmlContent() set DOMDocument::$validateOnParse = true before loadXML(), re-enabling external entity resolution and allowing attacker-supplied XML to expand file:// entities such as local files. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:NIntegrity

None

A:NAvailability

None

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Weaknesses

CWE-611

Affected Products

symfony

oss-projectaka symfony framework, twig (related)

symfonyLibrary

OSS Libraries / web-framework

dom-crawlerLibrary

OSS Libraries / web-framework

sensiolabs

oss-project

symfonyLibraryLibrary

OSS Libraries / generic-library

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Collection

Initial Access

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References

https://github.com/symfony/symfony/commit/eea5fd7488cbdc241da4ce242344b7d9a3ecdf3d

github.com

https://github.com/symfony/symfony/releases/tag/v5.4.52

github.com

https://github.com/symfony/symfony/releases/tag/v6.4.40

github.com

and 3 more references View all →

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