CVEvulnerability
CVE-2020-26210
8.7 HIGH
Official page ↗
- Status
- Modified
- Published
- 2020-11-03
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.7 HIGH — CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
- CVSS 3.1 ([email protected])
- 8.7 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
- CVSS 2.0 ([email protected])
- 3.5 LOW — AV:N/AC:M/Au:S/C:N/I:P/A:N
- Weaknesses
- CWE-79
Description
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.
Affected configurations
• bookstackapp bookstack (< 0.30.4)
Related
Weakness · CWE (1)
- CWE-79 Improper Neutralization of Input During Web Page Generation weakness
References
- https://bookstackapp.com/blog/beta-release-v0-30-4/ Exploit, Patch, Vendor Advisory
- 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 Exploit, Third Party Advisory
- https://bookstackapp.com/blog/beta-release-v0-30-4/ Exploit, Patch, Vendor Advisory
- 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 Exploit, Third Party Advisory