Vulnerability in Owncloud Server

CVE-2021-29659

ownCloud 10.7 has an incorrect access control vulnerability, leading to remote information disclosure. Due to a bug in the related API endpoint, the attacker can enumerate all users in a single request by entering three whitespaces. Secondary, the retrieval of all users on a large instance could cause higher than average load on the instance.

EPSS: 0.013 (68.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

References

Frequently asked questions

What is CVE-2021-29659?
CVE-2021-29659 is a medium-severity vulnerability in Owncloud Server. CVSS score: 6.5/10. Published 2021-05-20.
How severe is CVE-2021-29659?
Medium severity. CVSS v3 base score is 6.5 out of 10.