CVE-2026-45071

HIGH

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

Title source: cna
STIX 2.1

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.

References (6)

Core 6

Scores

CVSS v3 7.5
EPSS 0.0046
EPSS Percentile 37.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-611
Status published
Products (9)
sensiolabs/symfony < 5.4.52
symfony/dom-crawler < 5.4.52
symfony/dom-crawler >= 6.0.0-BETA1, < 6.4.40
symfony/dom-crawler >= 7.0.0-BETA1, < 7.4.12
symfony/dom-crawler >= 8.0.0-BETA1, < 8.0.12
symfony/symfony < 5.4.52
symfony/symfony >= 6.0.0-BETA1, < 6.4.40
symfony/symfony >= 7.0.0-BETA1, < 7.4.12
symfony/symfony >= 8.0.0-BETA1, < 8.0.12
Published Jul 14, 2026
Tracked Since Jul 15, 2026