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4.3 Medium

CVE-2021-21705 In PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21 and 8.0.x below 8.0.8, when using URL validation functionality…

Description

In PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21 and 8.0.x below 8.0.8, when using URL validation functionality via filter_var() function with FILTER_VALIDATE_URL parameter, an URL with invalid password field can be accepted as valid. This can lead to the code incorrectly parsing the URL and potentially leading to other security implications - like contacting a wrong server or making a wrong access decision.

Affected products and versions

Product Affected versions Fixed in
PHP 8.0 8.0.X → < 8.0.8 8.0.8
PHP 7.4 7.4.x → < 7.4.21 7.4.21
PHP 7.3 7.3.x → < 7.3.29 7.3.29

References

Timeline

  1. Published
  2. Last modified

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