In Liferay Portal 7.2.0 through 7.4.1, and older unsupported versions, and Liferay DXP 7.3 before service pack 3, 7.2 before fix pack 15, and older unsupported versions the `doAsUserId` URL parameter may get leaked when creating linked content using the WYSIWYG editor and while impersonating a user. This may allow remote authenticated users to impersonate a user after accessing the linked content.

Liferay Portal 7.2.0 through 7.4.1, and older unsupported versions, and Liferay DXP 7.3 before service pack 3, 7.2 before fix pack 18, and older unsupported versions returns with different responses depending on whether a site does not exist or if the user does not have permission to access the site, which allows remote attackers to discover the existence of sites by enumerating URLs. This vulnerability occurs if locale.prepend.friendly.url.style=2 and if a custom 404 page is used.

The IFrame widget in Liferay Portal 7.2.0 through 7.4.3.26, and older unsupported versions, and Liferay DXP 7.4 before update 27, 7.3 before update 6, 7.2 before fix pack 19, and older unsupported versions does not check the URL of the IFrame, which allows remote authenticated users to cause a denial-of-service (DoS) via a self referencing IFrame.

Stored cross-site scripting (XSS) vulnerability in the Portal Search module's Search Result app in Liferay Portal 7.2.0 through 7.4.3.11, and older unsupported versions, and Liferay DXP 7.4 before update 8, 7.3 before update 4, 7.2 before fix pack 17, and older unsupported versions allows remote authenticated users to inject arbitrary web script or HTML into the Search Result app's search result if highlighting is disabled by adding any searchable content (e.g., blog, message board message, web content article) to the application.

A SQL injection vulnerability in the Friendly Url module in Liferay Portal 7.3.7, and Liferay DXP 7.3 fix pack 2 through update 4 allows attackers to execute arbitrary SQL commands via a crafted payload injected into the `title` field of a friendly URL.

Certain Liferay products are vulnerable to Cross Site Scripting (XSS) via the Commerce module. This affects Liferay Portal 7.3.5 through 7.4.2 and Liferay DXP 7.3 before update 8.

A SQL injection vulnerability in the Fragment module in Liferay Portal 7.3.3 through 7.4.3.16, and Liferay DXP 7.3 before update 4, and 7.4 before update 17 allows attackers to execute arbitrary SQL commands via a PortletPreferences' `namespace` attribute.

A Cross-site scripting (XSS) vulnerability in the Portal Search module in Liferay Portal 7.1.0 through 7.4.2, and Liferay DXP 7.1 before fix pack 27, 7.2 before fix pack 15, and 7.3 before service pack 3 allows remote attackers to inject arbitrary web script or HTML via the `tag` parameter.

A Cross-site scripting (XSS) vulnerability in the Sharing module's user notification in Liferay Portal 7.2.1 through 7.4.2, and Liferay DXP 7.2 before fix pack 19, and 7.3 before update 4 allows remote attackers to inject arbitrary web script or HTML by sharing an asset with a crafted payload.

A SQL injection vulnerability in the Layout module in Liferay Portal 7.1.3 through 7.4.3.4, and Liferay DXP 7.1 before fix pack 27, 7.2 before fix pack 17, 7.3 before service pack 3, and 7.4 GA allows remote authenticated attackers to execute arbitrary SQL commands via a crafted payload injected into a page template's 'Name' field.