Arbitrary file upload in Nextcloud Contacts - CVE-2020-8281
Published: November 27, 2020
Vulnerability identifier: #VU48692
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-8281
CWE-ID: CWE-434
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform XSS attacks.
The vulnerability exists due to insufficient validation of file during file upload. A remote attacker can upload a malicious SVG file and execute arbitrary HTML code in victim's browser in context of vulnerable website.
Affected software
Nextcloud Contacts
How to mitigate CVE-2020-8281
Install updates from vendor's website.
Nextcloud Contacts - update to 3.4.0