SB2020110618 - Cross-site scripting in Joplin
Published: November 6, 2020 Updated: May 11, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Cross-site scripting (CVE-ID: CVE-2020-28249)
The disclosed vulnerability allows a remote user to perform cross-site scripting (XSS) attacks via a LINK element in a note.
The vulnerability exists due to insufficient sanitization of user-supplied data passed via a LINK element in a note. A remote user can inject 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.
Remediation
Install update from vendor's website.