In BookStack before version 0.30.4, a user with permissions to edit a page could insert JavaScript code through the use of `javascript:` URIs within a link or form which would run, within the context of the current page, when clicked or submitted. Additionally, a user with permissions to edit a page could insert a particular meta tag which could be used to silently redirect users to a alternative location upon visit of a page. Dangerous content may remain in the database but will be removed before being displayed on a page. If you think this could have been exploited the linked advisory provides a SQL query to test. As a workaround without upgrading, 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 BookStack version 0.30.4.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2020-11-03T21:00:18
Updated: 2024-08-04T15:49:07.293Z
Reserved: 2020-10-01T00:00:00
Link: CVE-2020-26211
Vulnrichment
No data.
NVD
Status : Modified
Published: 2020-11-03T21:15:12.547
Modified: 2024-11-21T05:19:32.137
Link: CVE-2020-26211
Redhat
No data.