CVSS 3.1
6.4 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:NCVE-2020-26260
Medium (6.4) in bookstackapp bookstack. EPSS 0.8% chance of exploitation in the next 30 days.
BookStack is a platform for storing and organising information and documentation. In BookStack before version 0.30.5, a user with permissions to edit a page could set certain image URL's to manipulate functionality in the exporting system, which would allow them to make server side requests and/or have access to a wider scope of files within the BookStack file storage locations. The issue was addressed in BookStack v0.30.5. As a workaround, page edit permissions could be limited to only those that are trusted until you can upgrade.
Severity
- EPSS
- 0.8% chance of exploitation in the next 30 days; higher than 57% of CVEs (scores of 2026-10-31)
- CWE
- CWE-74
- Published
- Modified
- Record from
- the NVD, synced
Affected
- bookstackapp:bookstack
References
- https://bookstackapp.com/blog/beta-release-v0-30-5/
- https://github.com/BookStackApp/BookStack/releases/tag/v0.30.5
- https://github.com/BookStackApp/BookStack/security/advisories/GHSA-8wfc-w2r5-x7cr
- https://bookstackapp.com/blog/beta-release-v0-30-5/
- https://github.com/BookStackApp/BookStack/releases/tag/v0.30.5