VULNERABILITY INTELLIGENCE
CVE-2026-116020
CVSS score5.4 MEDIUM
EPSS probability0.18%
CISA KEVNot currently listed
Published2026-10-24
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
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permissions can enumerate sequential attachment IDs to download, rename, relink, or replace files on another user's unpublished draft pages.
Weakness classification
- disclosure@vulncheck.com: CWE-863