CVE-2026-116020 (GCVE-0-2026-116020)

Vulnerability from cvelistv5 – Published: 2026-10-24 11:40 – Updated: 2026-10-24 11:40
VLAI
Title
BookStack before 26.09.2 Incorrect Authorization via AttachmentController on Draft Pages
Summary
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permissions can enumerate sequential attachment IDs to download, rename, relink, or replace files on another user's unpublished draft pages.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-863 - Incorrect Authorization
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6775 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
BookStackApp BookStack Affected: 0 , < 26.09.2 (custom)
    cpe:2.3:a:bookstackapp:bookstack:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-15 01:12
Credits
Huzaifa Dal
Show details on NVD website
To clipboard 

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    "datePublished": "2026-10-24T11:40:36.328Z",
    "dateReserved": "2026-10-24T11:23:57.535Z",
    "dateUpdated": "2026-10-24T11:40:36.328Z",
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          }
        ],
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}



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