Path Traversal in Nextcloud Nextcloud_server

CVE-2026-45279

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 case…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.000 (12.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-45279?
CVE-2026-45279 is a medium-severity vulnerability in Nextcloud Nextcloud_server, classified under Path Traversal. CVSS score: 4.4/10. Published 2026-06-01.
How severe is CVE-2026-45279?
Medium severity. CVSS v3 base score is 4.4 out of 10.