Cross Site Scripting (XSS) Vulnerability in Mahara 16.10, 17.04, and 17.10

CVE-2017-17454 · LOW Severity

AV:N/AC:M/AU:S/C:N/I:P/A:N

Mahara 16.10 before 16.10.7 and 17.04 before 17.04.5 and 17.10 before 17.10.2 have a Cross Site Scripting (XSS) vulnerability when a user enters invalid UTF-8 characters. These are now going to be discarded in Mahara along with NULL characters and invalid Unicode characters. Mahara will also avoid direct $_GET and $_POST usage where possible, and instead use param_exists() and the correct param_*() function to fetch the expected value.

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