Vulnerability in Nextcloud Server
CVE-2023-39960
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. In Nextcloud Server starting with 25.0.0 and prior to 25.09 and 26.04; as well as Nextcloud Enterprise Server starting with 22.0.0 and prior to 22.2.10.14, 23.0.12.9, 24.0.12.5, 25.0.9, and 26.0.4; missing protection allows an attacker to brute force passwords on the WebDAV API. Nextcloud Server 25.0.9 and 26.0.4 and Nextcloud Enterprise Server 22.2.10.14, 23.0.12.9, 24.0.12.5, 25.0.9, and 26.0.4 contain patches for this issue. No known workarounds are available.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (45.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Nextcloud Server
- Nextcloud Security-Advisories — versions >= 22.0.0, < 22.2.10.14, >= 23.0.0, < 23.0.12.9, >= 24.0.0, < 24.0.12.5
Weakness classification (CWE)
References
- github.com/nextcloud/security-advisories/security/advisories/GHSA-2hrc-5fgp-c9c9 (Vendor Advisory)
- github.com/nextcloud/server/pull/38046 (Patch, Issue Tracking)
- hackerone.com/reports/1924212 (Third Party Advisory)
Frequently asked questions
- What is CVE-2023-39960?
- CVE-2023-39960 is a medium-severity vulnerability in Nextcloud Server, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 5.0/10. Published 2023-10-13.
- How severe is CVE-2023-39960?
- Medium severity. CVSS v3 base score is 5.0 out of 10.