CVE-2020-26260

Medium

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.

SeverityMedium
CVSS6.4
Exploit probability—
ProductBookstack
PublishedDec 9, 2020
First seenDec 9, 2020
Weakness typeCWE-74Injection

How to fix

Update
  • bookstackapp bookstack0.30.5 or later

Affected products

ProductAffected versionsFixed in
bookstackapp bookstackv < 0.30.50.30.5

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