Cross-site scripting (XSS) vulnerability in the leave comment (feedback) feature in Typo 5.1.3 and earlier allows remote attackers to inject arbitrary web script or HTML via the (1) comment[author] (Name) and (2) comment[url] (Website) parameters.

SQL injection vulnerability in the "Manage pages" feature (admin/pages) in Typo 5.1.3 and earlier allows remote authenticated users with "blog publisher" rights to execute arbitrary SQL commands via the search[published_at] parameter.

Typo 5.1.3 and earlier uses a hard-coded salt for calculating password hashes, which makes it easier for attackers to guess passwords via a brute force attack.