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This bulletin was written by Vigil@nce : https://vigilance.fr/offer/Computer-vulnerability-database-and-alert

SYNTHESIS OF THE VULNERABILITY

An attacker can trigger a Cross Site Scripting of Joomla
AcyMailing, in order to run JavaScript code in the context of the
web site.

Impacted products: Joomla Extensions not comprehensive.

Severity: 2/4.

Consequences: client access/rights.

Provenance: document.

Confidence: confirmed by the editor (5/5).

Creation date: 26/03/2019.

DESCRIPTION OF THE VULNERABILITY

The AcyMailing extension can be installed on Joomla.

However, it does not filter received data before inserting them in
generated HTML documents.

An attacker can therefore trigger a Cross Site Scripting of Joomla
AcyMailing, in order to run JavaScript code in the context of the
web site.

ACCESS TO THE FULL VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/Joomla-AcyMailing-Cross-Site-Scripting-28858