Vulnerability · Published Jun 1, 2026 · Assigned by GitHub_M
CVE-2026-45279Nextcloud: Limited path traversal via template API if using `{lang}` in config
Medium 4.4
In plain English
A medium-severity path traversal in security-advisories from nextcloud. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).
Official description
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
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| nextcloud | security-advisories | >= 31.0.0, < 31.0.14>= 32.0.0, < 32.0.4 |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-j33j-qph5-4wch x_refsource_CONFIRM
- https://github.com/nextcloud/server/pull/57414/files x_refsource_MISC
- https://hackerone.com/reports/3468140 x_refsource_MISC