CVE-2020-26260

MEDIUM

BookStack < 0.30.5 - Server-Side Request Forgery and Arbitrary File Access via Image URL Export Manipulation

Title source: llm
STIX 2.1

Description

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.

References (3)

Core 3
Core References
Vendor Advisory x_refsource_misc
https://bookstackapp.com/blog/beta-release-v0-30-5/
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/BookStackApp/BookStack/releases/tag/v0.30.5

Scores

CVSS v3 6.4
EPSS 0.0083
EPSS Percentile 52.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Details

CWE
CWE-74
Status published
Products (1)
bookstackapp/bookstack < 0.30.5
Published Dec 09, 2020
Tracked Since Feb 18, 2026