6.3

CVE-2026-45157

Nextcloud: Valid share tokens allow to access tempory upload files of share owner

Valid share tokens allow to access tempory upload files of share owner

Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, when a malicious user has access to a file share of a user, they could use this share token to also access the chunking upload directly and see temporary part files during on going uploads. It is recommended that the Nextcloud Server is upgraded to 32.0.9 or 33.0.3. It is recommended that the Nextcloud Enterprise Server is upgraded to 26.0.13.26, 27.1.11.25, 28.0.14.17, 29.0.16.16, 30.0.17.9, 31.0.14.5, 32.0.9 or 33.0.3
Mögliche Gegenmaßnahme
Server: * No workaround available
Enterprise Server: * No workaround available
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
Herstellernextcloud
≫
Produkt security-advisories
Version >= 32.0.0, < 32.0.9
Status affected
Version >= 33.0.0, < 33.0.3
Status affected
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Weitere Schwachstelleninformationen
SystemNextcloud
≫
Produkt Server
Version >= 32.0.0, < 32.0.9
Version >= 33.0.0, < 33.0.3
SystemNextcloud
≫
Produkt Enterprise Server
Version >= 26.0.0, < 26.0.13.26
Version >= 27.0.0, < 27.1.11.25
Version >= 28.0.0, < 28.0.14.17
Version >= 29.0.0, < 29.0.16.16
Version >= 30.0.0, < 30.0.17.9
Version >= 31.0.0, < 31.0.14.5
Version >= 32.0.0, < 32.0.9
Version >= 33.0.0, < 33.0.3
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.23% 0.137
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 6.3 2.1 4.2
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
CWE-284 Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-45pj-p7x7-4mhc
https://github.com/nextcloud/server/pull/59780
https://hackerone.com/reports/3483708
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-45pj-p7x7-4mhc
Third Party Advisory