Open Redirect in Nextcloud Server
CVE-2023-35171
NextCloud Server and NextCloud Enterprise Server provide file storage for Nextcloud, a self-hosted productivity platform. Starting in version 26.0.0 and prior to version 26.0.2, an attacker could supply a URL that redirects an unsuspecting victim from a legitimate domain to an attacker's site. Nextcloud Server and Nextcloud Enterprise Server 26.0.2 contain a patch for this issue. No known workarounds are available.
Vulnerability class: Open Redirect
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (46.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.2% 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 >= 26.0.0, < 26.0.2
Weakness classification (CWE)
References
- github.com/nextcloud/security-advisories/security/advisories/GHSA-h353-vvwv-j2r4 (Exploit, Issue Tracking, Vendor Advisory)
- github.com/nextcloud/server/pull/38194 (Patch, Issue Tracking)
- hackerone.com/reports/1977222 (Exploit, Third Party Advisory, Mitigation, Issue Tracking)
Frequently asked questions
- What is CVE-2023-35171?
- CVE-2023-35171 is a medium-severity vulnerability in Nextcloud Server, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.1/10. Published 2023-06-23.
- How severe is CVE-2023-35171?
- Medium severity. CVSS v3 base score is 4.1 out of 10.