The mail message display page in SquirrelMail through 1.4.22 has XSS via a "<form action='data:text" attack.Referenceshttps://sourceforge.net/p/squirrelmail/bugs/2831/http://www.openwall.com/lists/oss-security/2018/07/26/2https://bugs.debian.org/905023https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVXTYMZ35IC5KPNMAE6BWAQWURMX7KZO/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T5FP5O562A4FM5TCFNEW73SS6PZONSAC/
