CVE-2026-45279

MEDIUM EPSS 31.0%
Published Jun 1, 20264w ago · Modified Jun 17, 20261w ago
6.5 CVSS 3.1
Medium
Find Similar
Published Jun 1, 2026 4w ago
Last Modified Jun 17, 2026 1w ago

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

CVSS Details

Base Score
6.5
Exploitability
2.8
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
31.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-22 Path Traversal Resource Mgmt

Affected Products 7

VendorProductVersionRange
nextcloudnextcloud_server*≥31.0.0  –  <31.0.14
nextcloudnextcloud_server*≥32.0.0  –  <32.0.4
nextcloudnextcloud_server*≥28.0.0  –  <28.0.14.15
nextcloudnextcloud_server*≥29.0.0  –  <29.0.17.12
nextcloudnextcloud_server*≥30.0.0  –  <30.0.17.7
nextcloudnextcloud_server*≥31.0.0  –  <31.0.14
nextcloudnextcloud_server*≥32.0.0  –  <32.0.4

References 3

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

Remediation

  • github.com https://github.com/nextcloud/server/pull/57414/files
    Issue TrackingPatch