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CVE-2026-5484

MEDIUM

5.3

Descricao

A weakness has been identified in BookStackApp BookStack up to 26.03. Affected is the function chapterToMarkdown of the file app/Exports/ExportFormatter.php of the component Chapter Export Handler. Executing a manipulation of the argument pages can lead to improper access controls. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 26.03.1 is able to address this issue. This patch is called 8a59895ba063040cc8dafd82e94024c406df3d04. It is advisable to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Detalhes CVE

Pontuacao CVSS v3.15.3

SeveridadeMEDIUM

Vetor CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado4/3/2026

Ultima modificacao4/3/2026

Fontenvd

Avistamentos honeypot0

Fraquezas (CWE)

CWE-266CWE-284

Referencias

https://github.com/BookStackApp/BookStack/(cna@vuldb.com)

https://github.com/BookStackApp/BookStack/commit/8a59895ba063040cc8dafd82e94024c406df3d04(cna@vuldb.com)

https://github.com/BookStackApp/BookStack/releases/tag/v26.03.1(cna@vuldb.com)

https://github.com/Ghufran2/CVE-Bookstack/blob/main/Permission%20Bypass%20in%20Markdown%20Chapter%20Export(cna@vuldb.com)

https://vuldb.com/submit/781762(cna@vuldb.com)

https://vuldb.com/vuln/355091(cna@vuldb.com)

https://vuldb.com/vuln/355091/cti(cna@vuldb.com)

https://www.bookstackapp.com/blog/bookstack-release-v26-03-1/(cna@vuldb.com)

Correlacoes IOC

Sem correlacoes registradas

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