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An issue was discovered in Joomla! before 3.9.7. The subform fieldtype does not sufficiently filter or validate input of subfields. This leads to XSS attack vectors.
(Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'))
CVSS Base Score
In Joomla! 3.x before 3.9.12, inadequate escaping allowed XSS attacks using the logo parameter of the default templates.
In Joomla! before 3.9.11, inadequate checks in com_contact could allow mail submission in disabled forms.
In Joomla! 3.9.7 and 3.9.8, inadequate filtering allows users authorised to create custom fields to manipulate the filtering options and inject an unvalidated option. In other words, the filter attribute in subform fields allows remote code execution...
An issue was discovered in Joomla! before 3.9.7. The CSV export of com_actionslogs is vulnerable to CSV injection.
An issue was discovered in Joomla! before 3.9.7. The update server URL of com_joomlaupdate can be manipulated by non Super-Admin users.
An issue was discovered in Joomla! before 3.9.6. The debug views of com_users do not properly escape user supplied data, which leads to a potential XSS attack vector.
An issue was discovered in Joomla! before 3.9.5. The "refresh list of helpsites" endpoint of com_users lacks access checks, allowing calls from unauthenticated users.
An issue was discovered in Joomla! before 3.9.5. The Media Manager component does not properly sanitize the folder parameter, allowing attackers to act outside the media manager root directory.
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