CVE-2021-29659

6.5 mediumEPSS 1.3%

Medium (6.5) in owncloud owncloud server. EPSS 1.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

6.5 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS: 1.3% chance of exploitation in the next 30 days; higher than 70% of CVEs (scores of 2026-10-31)
Published: 2021-05-20
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

owncloud:owncloud_server

References

https://doc.owncloud.com/server/admin_manual/release_notes.html
https://owncloud.com/security-advisories/cve-2021-29659/
https://doc.owncloud.com/server/admin_manual/release_notes.html
https://owncloud.com/security-advisories/cve-2021-29659/

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