CVE-2026-45279 MEDIUM

CVE-2026-45279: Nextcloud: Limited path traversal via template API if using `{lang}` in config

Vendor Nextcloud
Product security-advisories
Weakness CWE-22 · Path traversal
Published June 1, 2026
Last update June 2, 2026
View on NVD All CVEs

CVSS base score

4.4/10
Attack vector Network
Attack complexity High
Privileges required High
User interaction None
Confidentiality High
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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

Key dates

02Disclosure timeline

June 1, 2026 CVE published
June 2, 2026 Record updated