A receiver of a federated share with access to the database with ownCloud version before 10.8 could update the permissions and therefore el…

published 2021-09-07 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-22581

cvss: 9.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.5%; EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

owncloud owncloud 10.8.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-35946 updated 2025-11-21 cvss 7.3

ownCloud: permissions escalation possible for a receiver of a federated share

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.48% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-269 Improper Privilege Management

References

doc.owncloud.com /server/admin_manual/release_notes.html
release-notes, vendor-advisory
owncloud.com /security-advisories/cve-2021-35946/
vendor-advisory

Sources

CVE List CVE-2021-35946
NVD CVE-2021-35946

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary