Vulnerability record · CVE-2026-45279 · published 1 June 2026

CVE-2026-45279: Nextcloud server path traversal vulnerability

Nextcloud · Nextcloud Server

Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 31.0.0 to before 31.0.14, and 32.0.0 to before 32.0.4, if {lang} is used in the template directory config value, non-admin users can in some cases copy arbitrary files (depending on unix permissions) into their own Nextcloud directory via a path traversal. It is recommended that the Nextcloud Server is upgraded to 32.0.4, 31.0.14. It is recommended that the Nextcloud Enterprise Server is upgraded to 32.0.4, 31.0.14, 30.0.17.7, 29.0.17.12, 28.0.14.15

6.5 CVSS 3.1 Medium EPSS 0.58% · top 54.7% CWE-22 · Path traversal

6.5CVSS 3.1 base score

0.58%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

3References

22 Jul 2026Last modified by NVD

Description

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

Affected products

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

Nextcloud Server Nextcloud

References

Link	Tags
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-j33j-qph5-4wch	MitigationVendor Advisory
https://github.com/nextcloud/server/pull/57414/files	Issue TrackingPatch
https://hackerone.com/reports/3468140	Permissions Required

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

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Source: NIST National Vulnerability Database (record CVE-2026-45279), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.