CVE-2026-84204

HIGH CVSS 4.0: 7.1 EPSS 0.24%
Updated Sep 08, 2026
GROWI
Parameter Value
CVSS 7.1 (HIGH)
Type CWE-862 (Missing Authorization)
Vendor GROWI
Public PoC No

GROWI contains an access control vulnerability in the GET /_api/v3/attachment/:id endpoint that fails to validate page access permissions. Authenticated attackers can retrieve attachment metadata from pages they cannot view by supplying known attachment identifiers.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
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 v4.0