Auth bypass in Owncloud

CVE-2020-10254

An issue was discovered in ownCloud before 10.4. An attacker can bypass authentication on a password-protected image by displaying its preview.

Vulnerability class: Broken Authentication

EPSS: 0.016 (72.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Owncloud
N/a — versions n/a

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

cve@mitre.org (Product, x_refsource_MISC, Release Notes)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2020-10254?: CVE-2020-10254 is a medium-severity vulnerability in Owncloud, classified under Improper Authentication. CVSS score: 5.9/10. Published 2021-02-19.
How severe is CVE-2020-10254?: Medium severity. CVSS v3 base score is 5.9 out of 10.