title: Special characters break path parsing in XML functions
description: In PHP versions 7.3.x below 7.3.33, 7.4.x below 7.4.26 and 8.0.x below 8.0.13, certain XML parsing functions, like simplexml_load_file(), URL-decode the filename passed to them. If that filename contains URL-encoded NUL character, this may cause the function to interpret this as the end of the filename, thus interpreting the filename differently from what the user intended, which may lead it to reading a different file than intended.
problem types: CWE-159 Failure to Sanitize Special Element
affected:
{
vendor: PHP Group
product: PHP
versions:
version: 7.3.x, status: affected, lessThan: 7.3.33, versionType: custom
version: 7.4.x, status: affected, lessThan: 7.4.26, versionType: custom
version: 8.0.X, status: affected, lessThan: 8.0.13, versionType: custom
}
metrics:
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: LOW
integrityImpact: NONE
availabilityImpact: NONE
baseScore: 5.3
baseSeverity: MEDIUM
]