Dan Brown

13 exploits Active since Nov 2020
CVE-2026-5484 WRITEUP MEDIUM WRITEUP
BookStackApp BookStack Chapter Export ExportFormatter.php chapterToMarkdown access control
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.
CVSS 5.3
CVE-2020-26210 WRITEUP HIGH WRITEUP
Bookstack < 0.30.4 - XSS
In BookStack before version 0.30.4, a user with permissions to edit a page could add an attached link which would execute untrusted JavaScript code when clicked by a viewer of the page. Dangerous content may remain in the database after this update. If you think this could have been exploited the linked advisory provides a SQL query to test. As a workaround, page edit permissions could be limited to only those that are trusted until you can upgrade although this will not address existing exploitation of this vulnerability. The issue is fixed in version 0.30.4.
CVSS 7.7
CVE-2021-3758 WRITEUP MEDIUM WRITEUP
bookstack - SSRF
bookstack is vulnerable to Server-Side Request Forgery (SSRF)
CVSS 6.5
CVE-2021-3767 WRITEUP MEDIUM WRITEUP
bookstack - XSS
bookstack is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS 5.4
CVE-2021-3768 WRITEUP MEDIUM WRITEUP
bookstack - XSS
bookstack is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS 5.4
CVE-2021-3874 WRITEUP MEDIUM WRITEUP
bookstack - Path Traversal
bookstack is vulnerable to Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSS 6.5
CVE-2021-3915 WRITEUP MEDIUM WRITEUP
Bookstack < 21.10.3 - Unrestricted File Upload
bookstack is vulnerable to Unrestricted Upload of File with Dangerous Type
CVSS 5.7
CVE-2021-3916 WRITEUP MEDIUM WRITEUP
Bookstack < 21.10.3 - Path Traversal
bookstack is vulnerable to Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSS 6.5
CVE-2021-3944 WRITEUP MEDIUM WRITEUP
Bookstack < 21.11 - CSRF
bookstack is vulnerable to Cross-Site Request Forgery (CSRF)
CVSS 6.8
CVE-2021-4119 WRITEUP CRITICAL WRITEUP
Bookstack < 21.11.2 - Improper Access Control
bookstack is vulnerable to Improper Access Control
CVSS 9.8
CVE-2021-4194 WRITEUP MEDIUM WRITEUP
Bookstack < 21.12.1 - Incorrect Authorization
bookstack is vulnerable to Improper Access Control
CVSS 6.5
CVE-2022-0877 WRITEUP MEDIUM WRITEUP
Bookstack < 22.02.3 - XSS
Cross-site Scripting (XSS) - Stored in GitHub repository bookstackapp/bookstack prior to v22.02.3.
CVSS 5.4
CVE-2023-4624 WRITEUP LOW WRITEUP
bookstackapp/bookstack <v23.08 - SSRF
Server-Side Request Forgery (SSRF) in GitHub repository bookstackapp/bookstack prior to v23.08.
CVSS 2.4