Search Results (24 CVEs found)

CVE Vendors Products Updated CVSS v3.1
CVE-2026-82450 1 Bookstackapp 1 Bookstack 2026-08-29 8.8 High
BookStack before 26.05.4 contains a remote code execution vulnerability in the portable ZIP import functionality that allows users with Import Content and Create Books permissions to upload a PHP polyglot file as a book cover. Attackers can bypass image extension validation by embedding a PHP file with a .php filename in the ZIP archive, which is stored in the public web root and executed by unauthenticated requests.
CVE-2026-67204 1 Bookstackapp 1 Bookstack 2026-08-24 5.4 Medium
BookStack before 26.05.4 contains a broken access control vulnerability that allows authenticated API users with image-update or image-delete permissions to manipulate other users' avatars by exploiting missing content-type restrictions in the Image Gallery API endpoints. Attackers can supply a user avatar's ID to the API controller, which loads any image type without the web controller's gallery and drawio restrictions, and when the avatar's uploaded_to field matches a page ID accessible to the attacker, the authorization check passes allowing the attacker to rename, replace, or delete the target user's avatar without requiring user-management permission.
CVE-2026-5484 1 Bookstackapp 1 Bookstack 2026-04-24 5.3 Medium
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.
CVE-2023-6199 1 Bookstackapp 1 Bookstack 2025-05-19 6.5 Medium
Book Stack version 23.10.2 allows filtering local files on the server. This is possible because the application is vulnerable to SSRF.
CVE-2022-40690 1 Bookstackapp 1 Bookstack 2025-05-07 5.4 Medium
Cross-site scripting vulnerability in BookStack versions prior to v22.09 allows a remote authenticated attacker to inject an arbitrary script.
CVE-2023-4624 1 Bookstackapp 1 Bookstack 2024-11-21 2.4 Low
Server-Side Request Forgery (SSRF) in GitHub repository bookstackapp/bookstack prior to v23.08.
CVE-2022-0877 1 Bookstackapp 1 Bookstack 2024-11-21 5.4 Medium
Cross-site Scripting (XSS) - Stored in GitHub repository bookstackapp/bookstack prior to v22.02.3.
CVE-2021-4194 1 Bookstackapp 1 Bookstack 2024-11-21 6.5 Medium
bookstack is vulnerable to Improper Access Control
CVE-2021-4119 1 Bookstackapp 1 Bookstack 2024-11-21 9.8 Critical
bookstack is vulnerable to Improper Access Control
CVE-2021-4026 1 Bookstackapp 1 Bookstack 2024-11-21 4.3 Medium
bookstack is vulnerable to Improper Access Control
CVE-2021-3944 1 Bookstackapp 1 Bookstack 2024-11-21 6.8 Medium
bookstack is vulnerable to Cross-Site Request Forgery (CSRF)
CVE-2021-3916 1 Bookstackapp 1 Bookstack 2024-11-21 6.5 Medium
bookstack is vulnerable to Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVE-2021-3915 1 Bookstackapp 1 Bookstack 2024-11-21 5.7 Medium
bookstack is vulnerable to Unrestricted Upload of File with Dangerous Type
CVE-2021-3906 1 Bookstackapp 1 Bookstack 2024-11-21 6.5 Medium
bookstack is vulnerable to Unrestricted Upload of File with Dangerous Type
CVE-2021-3874 1 Bookstackapp 1 Bookstack 2024-11-21 6.5 Medium
bookstack is vulnerable to Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVE-2021-3768 1 Bookstackapp 1 Bookstack 2024-11-21 5.4 Medium
bookstack is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE-2021-3767 1 Bookstackapp 1 Bookstack 2024-11-21 5.4 Medium
bookstack is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE-2021-3758 1 Bookstackapp 1 Bookstack 2024-11-21 6.5 Medium
bookstack is vulnerable to Server-Side Request Forgery (SSRF)
CVE-2020-5256 1 Bookstackapp 1 Bookstack 2024-11-21 7.9 High
BookStack before version 0.25.5 has a vulnerability where a user could upload PHP files through image upload functions, which would allow them to execute code on the host system remotely. They would then have the permissions of the PHP process. This most impacts scenarios where non-trusted users are given permission to upload images in any area of the application. The issue was addressed in a series of patches in versions 0.25.3, 0.25.4 and 0.25.5. Users should upgrade to at least v0.25.5 to avoid this vulnerability.
CVE-2020-26260 1 Bookstackapp 1 Bookstack 2024-11-21 6.4 Medium
BookStack is a platform for storing and organising information and documentation. In BookStack before version 0.30.5, a user with permissions to edit a page could set certain image URL's to manipulate functionality in the exporting system, which would allow them to make server side requests and/or have access to a wider scope of files within the BookStack file storage locations. The issue was addressed in BookStack v0.30.5. As a workaround, page edit permissions could be limited to only those that are trusted until you can upgrade.