# symfony/validator XML Entity Expansion vulnerability

Source: https://junglewise.ai/threats/symfony-validator-xml-entity-expansion-vulnerability-935a8bfb  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2024-05-30  
License: CC BY 4.0 with a link back

Severity: low · CVSS 3.1 · Published 2024-05-30

symfony/validator XML Entity Expansion vulnerability

Technologies: [symfony/validator (Packagist)](https://junglewise.ai/threats/technologies/symfony-validator). Vendors: [Packagist](https://junglewise.ai/threats/vendors/packagist).

## Quick answers

**Is This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** Low severity, with a CVSS score of 3.1, published 30 May 2024.

**Which products and versions are affected?** symfony/validator (Packagist) ECOSYSTEM:introduced=2.0.0,fixed=2.0.17.

**Is there a fix for This vulnerability?** Yes. symfony/validator (Packagist): upgrade to 2.0.17 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected?** Check whether you run symfony/validator (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- symfony/validator (Packagist): upgrade to 2.0.17 or later

  ```sh
  composer require symfony/validator:^2.0.17
  ```


## Affected products

- symfony/validator (Packagist) ECOSYSTEM:introduced=2.0.0,fixed=2.0.17

## Related threats

- [Symfony has an incorrect response from Validator when input ends with `\n`](https://junglewise.ai/threats/cve-2024-50343-symfony-has-an-incorrect-response-from-validator-when-input-ends)
- [Symfony collectionCascaded and collectionCascadedDeeply fields security bypass](https://junglewise.ai/threats/cve-2013-4751-symfony-collectioncascaded-and-collectioncascadeddeeply-fields)