#VU119224 Stored cross-site scripting in Nextcloud Contacts - CVE-2025-66554

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Main Vulnerability Database Vulnerabilities #VU119224

#VU119224 Stored cross-site scripting in Nextcloud Contacts - CVE-2025-66554

Published: December 5, 2025


Vulnerability identifier: #VU119224
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-66554
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Nextcloud Contacts
Software vendor:
Nextcloud

Description

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

The vulnerability exists due to insufficient sanitization of user-supplied data in contacts app within organisation and title field. 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 updates from vendor's website.

External links