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permissions can enumerate sequential attachment IDs to download, rename, relink, or replace files on another user's unpublished draft pages.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Sat, 24 Oct 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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permissions can enumerate sequential attachment IDs to download, rename, relink, or replace files on another user's unpublished draft pages. | |
| Title | BookStack before 26.09.2 Incorrect Authorization via AttachmentController on Draft Pages | |
| First Time appeared |
Bookstackapp
Bookstackapp bookstack |
|
| Weaknesses | CWE-863 | |
| CPEs | cpe:2.3:a:bookstackapp:bookstack:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Bookstackapp
Bookstackapp bookstack |
|
| References |
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|
| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-24T11:40:36.328Z
Reserved: 2026-10-24T11:23:57.535Z
Link: CVE-2026-116020
No data.
Status : Received
Published: 2026-10-24T12:16:58.660
Modified: 2026-10-24T12:16:58.660
Link: CVE-2026-116020
No data.
OpenCVE Enrichment
Updated: 2026-10-24T12:45:06Z
Weaknesses