# Symfony2 security issue when the trust proxy mode is enabled

Source: https://junglewise.ai/threats/symfony2-security-issue-when-the-trust-proxy-mode-is-enabled-f92122df  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2024-05-30  
License: CC BY 4.0 with a link back

Severity: info · Published 2024-05-30

Symfony2 security issue when the trust proxy mode is enabled

Technologies: [symfony/http-foundation (Packagist)](https://junglewise.ai/threats/technologies/symfony-http-foundation), [symfony/symfony (Packagist)](https://junglewise.ai/threats/technologies/symfony-symfony). 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?** Informational severity, published 30 May 2024.

**Which products and versions are affected?** symfony/http-foundation (Packagist) ECOSYSTEM:introduced=2.0.0,fixed=2.0.19; symfony/symfony (Packagist) ECOSYSTEM:introduced=2.0.0,fixed=2.0.19.

**Is there a fix for This vulnerability?** Yes. symfony/http-foundation (Packagist): upgrade to 2.0.19 or later; symfony/symfony (Packagist): upgrade to 2.0.19 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/http-foundation (Packagist) or symfony/symfony (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/http-foundation (Packagist): upgrade to 2.0.19 or later

  ```sh
  composer require symfony/http-foundation:^2.0.19
  ```

- symfony/symfony (Packagist): upgrade to 2.0.19 or later

  ```sh
  composer require symfony/symfony:^2.0.19
  ```


## Affected products

- symfony/http-foundation (Packagist) ECOSYSTEM:introduced=2.0.0,fixed=2.0.19
- symfony/symfony (Packagist) ECOSYSTEM:introduced=2.0.0,fixed=2.0.19

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- [Symfony HTTP Foundation ReDoS in HeaderUtils::split()](https://junglewise.ai/threats/cve-2026-108082-symfony-is-a-php-framework-for-web-and-console-applications-and)
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