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CVE-2026-45279

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

Published: Jun 1, 2026Updated: Jul 22, 2026 Sources: CVE List NVDCWE-22
4.4MEDIUM
NVD MITRE
EPSS Score
0.4%
Top 68.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:HUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-22

Affected Products

nextcloud
oss-project·DEaka nextcloud server
security-advisoriesSaaSSaaS Service
Cloud & SaaS / saas-application
nextcloud serverSaaSSaaS Service
Cloud & SaaS / saas-application

Exploitability

Official Patch Available
Workaround Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-j33j-qph5-4wch
github.com
https://github.com/nextcloud/server/pull/57414/files
github.com
https://hackerone.com/reports/3468140
hackerone.com

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