Cross-site scripting in Piwigo - CVE-2019-13363

Detailed vulnerability description

The vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data when processing the nbm_send_html_mail, nbm_send_mail_as, nbm_send_detailed_content, nbm_complementary_mail_content, nbm_send_recent_post_dates, or param_submit parameter. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

How to mitigate CVE-2019-13363

Sources

• http://packetstormsecurity.com/files/154484/Piwigo-2.9.5-Cross-Site-Request-Forgery-Cross-Site-Scripting.html
• http://seclists.org/fulldisclosure/2019/Sep/25
• http://seclists.org/fulldisclosure/2020/Jun/29
• https://github.com/Piwigo/Piwigo/issues
• https://piwigo.com