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CVE-2026-45275

Nextcloud: Authorization bypass in approval feature allows unauthorized file sharing with approvers

Published: Jun 1, 2026Updated: Jul 22, 2026 Sources: CVE List NVDCWE-285

Description

Nextcloud is an open source content collaboration platform. Prior to version 2.7.2, a privilege escalation vulnerability exists in the Approval app that allows a user without sharing permissions to force the system to share a file with approvers. This results in an authorization bypass and privilege escalation, allowing unauthorized distribution of restricted files. This issue has been patched in version 2.7.2.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None

Weaknesses

Affected Products

nextcloud
oss-project·DEaka nextcloud server

Exploitability

Official Patch Available
Workaround Available

References

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