CVE-2026-116020: falha de média gravidade em BookStackApp BookStack
BookStack before 26.09.2 Incorrect Authorization via AttachmentController on Draft Pages
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13Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 5.3epss 0.2%
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permissions can enumerate sequential attachment IDs to download, rename, relink, or replace files on another user's unpublished draft pages.
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
Produtos afetados
BookStackApp · BookStackCVEs relacionadas — BookStackApp BookStack
No mesmo produto, das mais perigosas para as menos.
CVE-2020-5256HIGHRemote Code Execution Through Image Uploads in BookStackEPSS 2.0%CVE-2020-26210HIGHCross-Site Scripting in BookStackEPSS 1.2%CVE-2020-26211HIGHCross-Site Scripting in BookStackEPSS 1.1%CVE-2020-26260MEDIUMServer Side Request Forgery in BookStackEPSS 0.8%CVE-2020-11055MEDIUMCross-site Scripting in BookStackEPSS 0.8%CVE-2026-67204MEDIUMBookStack < 26.05.4 Broken Access Control via Image Gallery APIEPSS 0.4%
Referências
https://codeberg.org/bookstack/bookstack/commit/fcadecccda706b4ecaf9ac3f8e27defe0ebe78aehttps://codeberg.org/bookstack/bookstack/releases/tag/v26.09.2https://codeberg.org/bookstack/bookstack/src/tag/v26.09.1/app/Uploads/Controllers/AttachmentController.phphttps://www.bookstackapp.com/blog/bookstack-release-v26-09-2/https://www.vulncheck.com/advisories/bookstack-before-26.09.2-incorrect-authorization-via-attachmentcontroller-on-draft-pages