Multiple cross-site scripting (XSS) vulnerabilities in the Staff client in Koha before 3.16.6 and 3.18.x before 3.18.2 allow remote attackers to inject arbitrary web script or HTML via the sortby parameter to the (1) opac parameter in opac-search.pl or (2) intranet parameter in catalogue/search.pl.
Cross-site scripting (XSS) vulnerability in opac-addbybiblionumber.pl in Koha 3.14.x before 3.14.16, 3.16.x before 3.16.12, and 3.20.x before 3.20.1 allows remote attackers to inject arbitrary web script or HTML via a crafted list name.