#VU53056 Cross-site scripting in Joplin - CVE-2020-28249
Published: May 11, 2021 / Updated: June 17, 2021
Vulnerability identifier: #VU53056
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P/U:Clear
CVE-ID: CVE-2020-28249
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
Joplin
Joplin
Software vendor:
Joplinapp
Joplinapp
Description
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.