CVE-2020-5255

Low

Description

In Symfony before versions 4.4.7 and 5.0.7, when a `Response` does not contain a `Content-Type` header, affected versions of Symfony can fallback to the format defined in the `Accept` header of the request, leading to a possible mismatch between the response's content and `Content-Type` header. When the response is cached, this can prevent the use of the website by other users. This has been patched in versions 4.4.7 and 5.0.7.

SeverityLow
CVSS2.6
Exploit probability71. percentile1.3%
ProductSensiolabs Symfony
PublishedMar 30, 2020
First seenMar 30, 2020
Weakness typeCWE-435CWE-435

How to fix

Update
  • sensiolabs symfony4.4.7, 5.0.7 or later
  • symfony/http-foundation4.4.7, 5.0.7 or later
  • symfony/symfony4.4.7, 5.0.7 or later

Affected products

ProductAffected versionsFixed in
sensiolabs symfony4.4.0 ≤ v < 4.4.7, 5.0.0 ≤ v < 5.0.74.4.7, 5.0.7
symfony/http-foundationPackagist4.4.0 ≤ v < 4.4.7, 5.0.0 ≤ v < 5.0.74.4.7, 5.0.7
symfony/symfonyPackagist4.4.0 ≤ v < 4.4.7, 5.0.0 ≤ v < 5.0.74.4.7, 5.0.7

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