CVE-2021-21705 (GCVE-0-2021-21705)

Vulnerability from cvelistv5 – Published: 2021-10-04 04:00 – Updated: 2024-09-17 04:09
VLAI?
Title
Incorrect URL validation in FILTER_VALIDATE_URL
Summary
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.
Severity ?
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CWE
  • CWE-20 - Improper Input Validation
Assigner
php
References
Impacted products
Vendor Product Version
PHP Group PHP Affected: 7.3.x , < 7.3.29 (custom)
Affected: 7.4.x , < 7.4.21 (custom)
Affected: 8.0.X , < 8.0.8 (custom)
Create a notification for this product.
Credits
reported by vi at hackberry dot xyz
Show details on NVD website
To clipboard 

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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