3.5

CVE-2026-45159

Nextcloud: Files drop share links for end-to-end encrypted folders allowed to drop files into other folders of the share owner

Files drop share links for end-to-end encrypted folders allowed to drop files into other folders of the share owner

Nextcloud is an open source content collaboration platform. From versions 1.15.0 to before 1.15.4, 1.16.0 to before 1.16.3, 1.17.0 to before 1.17.1, and 1.18.0 to before 1.18.1, a malicious user with access to an end-to-end encrypted files drop link was able to also drop files into other end-to-end encrypted folders of the share owner. Reading and modifying of other files was not possible. This issue has been patched in versions 1.15.4, 1.16.3, 1.17.1, 1.18.1, and 2.0.0-rc.7.
Mögliche Gegenmaßnahme
End-to-End Encryption: * No workaround available
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
Herstellernextcloud
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Produkt security-advisories
Version >= 1.15.0, < 1.15.4
Status affected
Version >= 1.16.0, < 1.16.3
Status affected
Version >= 1.17.0, < 1.17.1
Status affected
Version >= 1.18.0, < 1.18.1
Status affected
VulnDex Vulnerability Enrichment
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Weitere Schwachstelleninformationen
SystemNextcloud App
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Produkt End-to-End Encryption
Version >= 1.15.0, < 1.15.4
Version >= 1.16.0, < 1.16.3
Version >= 1.17.0, < 1.17.1
Version >= 1.18.0, < 1.18.1
Version >= 2.0.0, < 2.0.0-rc.7
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.2% 0.101
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 3.5 2.1 1.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
CWE-639 Authorization Bypass Through User-Controlled Key

The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-p3qw-7gwx-wg24
https://github.com/nextcloud/end_to_end_encryption/pull/1395
https://hackerone.com/reports/3304830
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-p3qw-7gwx-wg24
Third Party Advisory