Bug 19112 - Stored XSS in basketheader.pl page

Bug 19112 - Stored XSS in basketheader.pl page

To Test

1. Hit the page /cgi-bin/koha/acqui/basketheader.pl?booksellerid=1&op=add_form
2. Add a text in the field Basket name, Internal note, Vendor note that contains java script
3. Save the page
4. Notice js is execute
5. Apply patch, reload, js is escaped.

Fixed XSS on pages basket.pl/basketheader.pl/bookseller.pl

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
(cherry picked from commit 65c7b505ee56f088f3c475595e53fbe53a77d4a2)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>