TI-2023-15613 Aliases CVE-2023-32319

Basic auth header on WebDAV requests is not brute-force protected in Nextcloud

LOW 38CWE-307Published 2023-05-26 · Updated 2025-01-14

Key facts

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

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

Summary

Nextcloud server is an open source personal cloud implementation. Missing brute-force protection on the WebDAV endpoints via the basic auth header allowed to brute-force user credentials when the provided user name was not an email address. Users from version 24.0.0 onward are affected. This issue has been addressed in releases 24.0.11, 25.0.5 and 26.0.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00697 53rd percentileScored 2026-11-07

Fix Fixed security-advisories (nextcloud): 24.0.11, 25.0.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

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	24.0.0 to before 24.0.11; 25.0.0 to before 25.0.5	24.0.11, 25.0.5	Patch available	CNA

security-advisories Vendornextcloud Affected 24.0.0 to before 24.0.11; 25.0.0 to before 25.0.5 Fixed in 24.0.11, 25.0.5 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:nextcloud:nextcloud_server::::::::	24.0.0 to before 24.0.11; 25.0.0 to before 25.0.5	Vulnerable	nextcloud

cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* Versions 24.0.0 to before 24.0.11; 25.0.0 to before 25.0.5 Vulnerable ·nextcloud

Remediation

Fix · CNA security-advisories (nextcloud) Fixed in 24.0.11, 25.0.5

Timeline

2026-10-02 Threatist record created from CVE-2023-32319

References

Patch 1

https://github.com/nextcloud/server/pull/37227

Advisory 1

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-mr7q-xf62-fw54

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