What is CVE-2020-8280?

CVE-2020-8280 is a medium-severity vulnerability in Nextcloud Contacts, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-01-06.

How severe is CVE-2020-8280?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Nextcloud Contacts

CVE-2020-8280

A missing file type check in Nextcloud Contacts 3.4.0 allows a malicious user to upload SVG files as PNG files to perform cross-site scripting (XSS) attacks.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.006 (46.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Nextcloud Contacts
N/a Nextcloud Contacts — versions Fixed in 3.4.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

support@hackerone.com (Exploit, Third Party Advisory, x_refsource_MISC)
support@hackerone.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2020-8280?: CVE-2020-8280 is a medium-severity vulnerability in Nextcloud Contacts, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-01-06.
How severe is CVE-2020-8280?: Medium severity. CVSS v3 base score is 5.4 out of 10.