CVE-2021-21705
Medium
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.
SeverityMedium
CVSS4.3
Exploit probability—
Product
Php
PublishedOct 4, 2021
First seenOct 4, 2021
Weakness typeCWE-20Improper input validation
How to fix
Update
- php php7.3.29, 7.4.21, 8.0.8 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| php php | 7.3.0 ≤ v < 7.3.29, 7.4.0 ≤ v < 7.4.21, 8.0.0 ≤ v < 8.0.8 | 7.3.29, 7.4.21, 8.0.8 |
| netapp clustered_data_ontap | No range specified | — |
| oracle sd-wan_aware | 8.2 | — |
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