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Vulnerability record · CVE-2023-35171 · published 23 June 2023

CVE-2023-35171: Nextcloud server open redirect vulnerability

Nextcloud · Nextcloud Server

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.

6.1 CVSS 3.1 Medium EPSS 0.59% · top 53.8% CWE-601 · Open redirect
6.1CVSS 3.1 base score
0.59%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h353-vvwv-j2r4 ExploitIssue TrackingVendor Advisory
https://github.com/nextcloud/server/pull/38194 Issue TrackingPatch
https://hackerone.com/reports/1977222 ExploitIssue TrackingMitigationThird Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h353-vvwv-j2r4 ExploitIssue TrackingVendor Advisory
https://github.com/nextcloud/server/pull/38194 Issue TrackingPatch
https://hackerone.com/reports/1977222 ExploitIssue TrackingMitigationThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-35171), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.