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prionPRIOn knowledge basePRION:CVE-2021-21707
HistoryNov 29, 2021 - 7:15 a.m.

Code injection

2021-11-2907:15:00
PRIOn knowledge base
www.prio-n.com
85

6.6 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

49.4%

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.