CVE - CVE-2020-26211

CVE-ID
CVE-2020-26211	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
CONFIRM:https://github.com/BookStackApp/BookStack/security/advisories/GHSA-r2cf-8778-3jgp URL:https://github.com/BookStackApp/BookStack/security/advisories/GHSA-r2cf-8778-3jgp MISC:https://github.com/BookStackApp/BookStack/commit/bbd1384acbe7e52c21f89af69f2dc391c95dbf54 URL:https://github.com/BookStackApp/BookStack/commit/bbd1384acbe7e52c21f89af69f2dc391c95dbf54 MISC:https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4 URL:https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4 MISC:https://www.bookstackapp.com/blog/beta-release-v0-30-4/ URL:https://www.bookstackapp.com/blog/beta-release-v0-30-4/
Assigning CNA
GitHub (maintainer security advisories)
Date Record Created
20201001	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20201001)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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