8.7

CVE-2020-26210

Exploit

Cross-Site Scripting in BookStack

In BookStack before version 0.30.4, a user with permissions to edit a page could add an attached link which would execute untrusted JavaScript code when clicked by a viewer of the page. Dangerous content may remain in the database after this update. If you think this could have been exploited the linked advisory provides a SQL query to test. As a workaround, 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 version 0.30.4.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Bookstackapp ≫ Bookstack Version < 0.30.4
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.16% 0.629
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 8.7 2.3 5.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
nvd@nist.gov 3.5 6.8 2.9
AV:N/AC:M/Au:S/C:N/I:P/A:N
security-advisories@github.com 7.7 1.3 5.8
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

https://bookstackapp.com/blog/beta-release-v0-30-4/
Patch
Vendor Advisory
Exploit
https://github.com/BookStackApp/BookStack/commit/349162ea139556b2d25e09e155cec84e21cc9227
Patch
Third Party Advisory
https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4
Third Party Advisory
https://github.com/BookStackApp/BookStack/security/advisories/GHSA-7p2j-4h6p-cq3h
Third Party Advisory
Exploit