BookStack before 26.09.2 contains an incorrect authorization vulnerability in AttachmentController that allows authenticated users to access other users' draft page attachments by ID. Attackers with attachment permissions can enumerate sequential attachment IDs to download, rename, relink, or replace files on another user's unpublished draft pages.
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
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Bookstackapp Bookstack
cpe:2.3:a:bookstackapp:bookstack:*:*:*:*:*:*:*:*
|
— |
26.09.2
|
References 5
https://codeberg.org/bookstack/bookstack/commit/fcadecccda706b4ecaf9ac3f8e27def…
NVD
https://www.bookstackapp.com/blog/bookstack-release-v26-09-2/
NVD
https://codeberg.org/bookstack/bookstack/releases/tag/v26.09.2
NVD
https://codeberg.org/bookstack/bookstack/src/tag/v26.09.1/app/Uploads/Controlle…
NVD
https://www.vulncheck.com/advisories/bookstack-before-26.09.2-incorrect-authori…
VulnCheck Advisory: BookStack before 26.09.2 Incorrect Authorization via AttachmentController on Draft Pages