Skip to content
CVE PROGRAM SOURCE RECORD5.3 Medium

CVE-2021-21707

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

PHP Group PHP

  • 7.3.x to < 7.3.33affected
  • 7.4.x to < 7.4.26affected
  • 8.0.X to < 8.0.13affected

References