# CVE-2013-5958: Symfony Denial of Service Via Long Password Hashing

Source: https://junglewise.ai/threats/cve-2013-5958-symfony-denial-of-service-via-long-password-hashing  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-05-17  
License: CC BY 4.0 with a link back

CVE-2013-5958 · Severity: info · Published 2022-05-17

Symfony Denial of Service Via Long Password Hashing

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

## Quick answers

**Is CVE-2013-5958 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2013-5958 being exploited in the wild.

**How severe is CVE-2013-5958?** Informational severity, published 17 May 2022.

**Which products and versions are affected?** symfony/polyfill (Packagist) ECOSYSTEM:introduced=1.0.0,fixed=1.10.0; symfony/security (Packagist) ECOSYSTEM:introduced=2.0.0,fixed=2.0.25; symfony/symfony (Packagist) ECOSYSTEM:introduced=2.0.0,fixed=2.0.25.

**Is there a fix for CVE-2013-5958?** Yes. symfony/polyfill (Packagist): upgrade to 1.10.0 or later; symfony/security (Packagist): upgrade to 2.0.25 or later; symfony/symfony (Packagist): upgrade to 2.0.25 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2013-5958?** Check whether you run symfony/polyfill (Packagist), symfony/security (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/polyfill (Packagist): upgrade to 1.10.0 or later

  ```sh
  composer require symfony/polyfill:^1.10.0
  ```

- symfony/security (Packagist): upgrade to 2.0.25 or later

  ```sh
  composer require symfony/security:^2.0.25
  ```

- symfony/symfony (Packagist): upgrade to 2.0.25 or later

  ```sh
  composer require symfony/symfony:^2.0.25
  ```


## Affected products

- symfony/polyfill (Packagist) ECOSYSTEM:introduced=1.0.0,fixed=1.10.0
- symfony/security (Packagist) ECOSYSTEM:introduced=2.0.0,fixed=2.0.25
- symfony/symfony (Packagist) ECOSYSTEM:introduced=2.0.0,fixed=2.0.25

## Identifiers

- CVE-2013-5958
- GHSA-cr49-fx2v-9p57

## Related threats

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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)
- [Symfony Polyfill improper validation of Punycode labels in Intl-Idn](https://junglewise.ai/threats/cve-2026-46644-symfony-polyfill-improper-validation-of-punycode-labels-in-intl)
- [Symfony Routing improper dot-segment encoding in UrlGenerator](https://junglewise.ai/threats/cve-2026-48784-symfony-routing-improper-dot-segment-encoding-in-urlgenerator)
- [Symfony HtmlSanitizer XSS via incomplete URL attribute sanitization](https://junglewise.ai/threats/cve-2026-48761-symfony-htmlsanitizer-xss-via-incomplete-url-attribute)