CVE-2026-45071
Symfony: XXE (Local File Disclosure) in DomCrawler::addXmlContent() via validateOnParse = true
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.
INFO
Published Date :
July 14, 2026, 8:17 p.m.
Last Modified :
July 14, 2026, 8:25 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update Symfony to version 5.4.52 or later.
- Update Symfony to version 6.4.40 or later.
- Update Symfony to version 7.4.12 or later.
- Update Symfony to version 8.0.12 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-45071.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-45071 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-45071
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-45071 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-45071 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Jul. 14, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'symfony', 'product': 'symfony', 'versions': [{'status': 'affected', 'version': '< 5.4.52'}, {'status': 'affected', 'version': '>= 6.0.0-BETA1, < 6.4.40'}, {'status': 'affected', 'version': '>= 7.0.0-BETA1, < 7.4.12'}, {'status': 'affected', 'version': '>= 8.0.0-BETA1, < 8.0.12'}]}, {'vendor': 'symfony', 'product': 'dom-crawler', 'versions': [{'status': 'affected', 'version': '< 5.4.52'}, {'status': 'affected', 'version': '>= 6.0.0-BETA1, < 6.4.40'}, {'status': 'affected', 'version': '>= 7.0.0-BETA1, < 7.4.12'}, {'status': 'affected', 'version': '>= 8.0.0-BETA1, < 8.0.12'}]}] Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-611 Added Reference https://github.com/symfony/symfony/commit/eea5fd7488cbdc241da4ce242344b7d9a3ecdf3d Added Reference https://github.com/symfony/symfony/releases/tag/v5.4.52 Added Reference https://github.com/symfony/symfony/releases/tag/v6.4.40 Added Reference https://github.com/symfony/symfony/releases/tag/v7.4.12 Added Reference https://github.com/symfony/symfony/releases/tag/v8.0.12 Added Reference https://github.com/symfony/symfony/security/advisories/GHSA-x6g4-fwcc-jj8w