CVE-2020-26211 – ssddanbrown/bookstack

Package

Manager: composer
Name: ssddanbrown/bookstack
Vulnerable Version: >=0 <0.30.4

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00432 pctl0.61828

Details

Bookstack Cross-site Scripting vulnerability 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.

Metadata

Created: 2022-05-24T17:32:59Z
Modified: 2023-07-20T14:49:19Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-ch37-ch8w-cfrq/GHSA-ch37-ch8w-cfrq.json
CWE IDs: ["CWE-79"]
Alternative ID: GHSA-ch37-ch8w-cfrq
Finding: F425
Auto approve: 1