CVE-2026-45267

MEDIUM CVSS 3.1: 6.5 EPSS 0.29%
Updated Jul 22, 2026
Nextcloud
Parameter Value
CVSS 6.5 (MEDIUM)
Fixed In 5.2.6
Type CWE-862 (Missing Authorization), CWE-200 (Information Exposure)
Vendor Nextcloud
Public PoC No

Nextcloud is an open source content collaboration platform. Prior to version 5.2.6, a missing permissions check allowed users to request reading form submissions of other users. This issue has been patched in version 5.2.6.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v3.1