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Vulnerability record · CVE-2021-35946 · published 7 September 2021

CVE-2021-35946: Owncloud improper privilege management vulnerability

Owncloud · Owncloud

A receiver of a federated share with access to the database with ownCloud version before 10.8 could update the permissions and therefore elevate their own permissions.

9.8 CVSS 3.1 Critical EPSS 1.5% · top 27.1% CWE-269 · Improper privilege management
9.8CVSS 3.1 base score, v2 7.5
1.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

A receiver of a federated share with access to the database with ownCloud version before 10.8 could update the permissions and therefore elevate their own permissions.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://doc.owncloud.com/server/admin_manual/release_notes.html Release NotesVendor Advisory
https://owncloud.com/security-advisories/cve-2021-35946/ Vendor Advisory
https://doc.owncloud.com/server/admin_manual/release_notes.html Release NotesVendor Advisory
https://owncloud.com/security-advisories/cve-2021-35946/ Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2015-4716Owncloud path traversal vulnerabilityDirectory traversal vulnerability in the routing component in ownCloud Server before 7.0.6 and 8.0.x before 8.0.4, when running on Windows, allows re…EPSS 25%9.8CVE-2014-2052Owncloud xml external entity (xxe) vulnerabilityZend Framework, as used in ownCloud Server before 5.0.15 and 6.0.x before 6.0.2, allows remote attackers to read arbitrary files, cause a denial of s…EPSS 2.5%9.8CVE-2014-2048Owncloud improper access control vulnerabilityThe user_openid app in ownCloud Server before 5.0.15 allows remote attackers to obtain access by leveraging an insecure OpenID implementation.EPSS 2.6%9.1CVE-2020-28645Owncloud improper input validation vulnerabilityDeleting users with certain names caused system files to be deleted. Risk is higher for systems which allow users to register themselves and have the…EPSS 1.2%9.0CVE-2015-7698Owncloud smb os command injection vulnerabilityicewind1991 SMB before 1.0.3 allows remote authenticated users to execute arbitrary SMB commands via shell metacharacters in the user argument in the…EPSS 2.5%9.0CVE-2015-4718Owncloud os command injection vulnerabilityThe external SMB storage driver in ownCloud Server before 6.0.8, 7.0.x before 7.0.6, and 8.0.x before 8.0.4 allows remote authenticated users to exec…EPSS 3.0%8.5CVE-2016-1499Owncloud information exposure vulnerabilityownCloud Server before 8.0.10, 8.1.x before 8.1.5, and 8.2.x before 8.2.2 allow remote authenticated users to obtain sensitive information from a dir…EPSS 3.5%8.3CVE-2020-10252Owncloud server-side request forgery (ssrf) vulnerabilityAn issue was discovered in ownCloud before 10.4. Because of an SSRF issue (via the apps/files_sharing/external remote parameter), an authenticated at…EPSS 1.2%

Source: NIST National Vulnerability Database (record CVE-2021-35946), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.