Default share permissions not respected for federated reshares

published 2021-07-12 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-19507

cvss: 3.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.2%; EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits: 0; none known

Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, default share permissions were not being respected for federated reshares of files and folders. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. There are no known workarounds.

Patch / fix

fixed in 1 distros 2 links 1

nextcloud nextcloud_server 19.0.13, 20.0.11, 21.0.3

opensuse arch linux

nextcloud Package Hub 15 SP3, Package Hub 15 SP2, Package Hub 15 SP1 +3 more 20.0.11-bp153.2.3.1

opensuse advisories openSUSE-SU-2021:1068-1

nextcloud Arch Linux 21.0.3-1

arch linux advisories AVG-2144

github.com/nextcloud/server#26946 pull request

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-2021-32725 updated 2025-11-21 cvss 7.5

nextcloud: server information disclosure

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

1.21% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	3.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
NVD	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

nextcloud security-advisories

Classification

Weakness

CWE-277 Insecure Inherited Permissions
CWE-276 Incorrect Default Permissions

References

github.com /nextcloud/server/pull/26946
patch, third-party-advisory
security.gentoo.org /glsa/202208-17
vendor-advisory, third-party-advisory
github.com /nextcloud/security-advisories/security/advisories/GHSA-6f6v-h9x9-jj4v
third-party-advisory
hackerone.com /reports/1178320
permissions-required

Sources

CVE List CVE-2021-32725
NVD CVE-2021-32725

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