Cross-site scripting (XSS) vulnerability in ecrire/exec/plonger.php in SPIP 3.1.3 allows remote attackers to inject arbitrary web script or HTML via the rac parameter.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2016-9969
https://core.spip.net/projects/spip/repository/revisions/23290