Vulnerability in Nextcloud Server
CVE-2023-28643
Nextcloud server is an open source home cloud implementation. In affected versions when a recipient receives 2 shares with the same name, while a memory cache is configured, the second share will replace the first one instead of being renamed to `{name} (2)`. It is recommended that the Nextcloud Server is upgraded to 25.0.3 or 24.0.9. Users unable to upgrade should avoid sharing 2 folders with the same name to the same user.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.008 (54.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Nextcloud Server
- Nextcloud Security-Advisories — versions < 24.0.9, >= 25.0.0, < 25.0.3
Weakness classification (CWE)
References
- github.com/nextcloud/security-advisories/security/advisories/GHSA-hhq4-4pr8-wm27 (Vendor Advisory)
- github.com/nextcloud/server/issues/34015 (Exploit, Issue Tracking)
- github.com/nextcloud/server/pull/36047 (Patch, Issue Tracking)
Frequently asked questions
- What is CVE-2023-28643?
- CVE-2023-28643 is a medium-severity vulnerability in Nextcloud Server, classified under Use of Incorrectly-Resolved Name or Reference. CVSS score: 5.5/10. Published 2023-03-30.
- How severe is CVE-2023-28643?
- Medium severity. CVSS v3 base score is 5.5 out of 10.