TI-2022-13162 Aliases CVE-2022-31118

Missing brute force protection on cloud federation sharing in Nextcloud Server

LOW 36CWE-770Published 2022-08-04 · Updated 2025-04-23

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service, Security bypass
Confidentiality · integrity · availability: Low · None · Low
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-770 and CWE-307.

Summary

Nextcloud server is an open source personal cloud solution. In affected versions an attacker could brute force to find if federated sharing is being used and potentially try to brute force access tokens for federated shares (`a-zA-Z0-9` ^ 15). It is recommended that the Nextcloud Server is upgraded to 22.2.9, 23.0.6 or 24.0.2. Users unable to upgrade may disable federated sharing via the Admin Sharing settings in `index.php/settings/admin/sharing`.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00767 55th percentileScored 2026-11-07

Fix Fixed security-advisories (nextcloud): 22.2.9, 23.0.6, 24.0.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
nextcloud	security-advisories	before 22.2.9; 23.0.0 to before 23.0.6; 24.0.0 to before 24.0.2	22.2.9, 23.0.6, 24.0.2	Patch available	CNA

security-advisories Vendornextcloud Affected before 22.2.9; 23.0.0 to before 23.0.6; 24.0.0 to before 24.0.2 Fixed in 22.2.9, 23.0.6, 24.0.2 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:nextcloud:nextcloud_server::::::::	before 22.2.9; 23.0.0 to before 23.0.6; 24.0.0 to before 24.0.2	Vulnerable	nextcloud

cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* Versions before 22.2.9; 23.0.0 to before 23.0.6; 24.0.0 to before 24.0.2 Vulnerable ·nextcloud

Remediation

Fix · CNA security-advisories (nextcloud) Fixed in 22.2.9, 23.0.6, 24.0.2

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2022-31118

References

Patch 1

https://github.com/nextcloud/server/pull/32843/commits/6eb692da7fe73c899cb6a8d2aa045eddb1f14018

Advisory 1

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-2vwh-5v93-3vcq

TI-2023-20855 Users can delete external storage mount points CVSS 3.1HIGH 7.7
TI-2023-11091 Nextcloud download permissions can be changed by resharer CVSS 3.1HIGH 7.5
TI-2023-10624 Nextcloud Server vulnerable to SSRF via filter bypass due to lax checking on IPs CVSS 3.1MEDIUM 5.3
TI-2025-37238 Cross-site scripting in Nextcloud CVSS 3.1MEDIUM 6.4
TI-2023-11086 nextcloud vulnerable to Uncontrolled Resource Consumption CVSS 3.1MEDIUM 6.5
TI-2022-18738 Exception logging in Sharepoint app reveals clear-text connection details CVSS 3.1MEDIUM 6.5

See all 188 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences