Medium severity6.4NVD Advisory· Published Dec 9, 2020· Updated Jun 17, 2026
CVE-2020-26260
CVE-2020-26260
Description
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.
AI Insight
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Affected products
3<0.30.5+ 1 more
- (no CPE)range: <0.30.5
- (no CPE)range: >= v0.7, < v0.30.5
Patches
Vulnerability mechanics
References
3- bookstackapp.com/blog/beta-release-v0-30-5/nvdVendor Advisory
- github.com/BookStackApp/BookStack/releases/tag/v0.30.5nvdRelease NotesThird Party Advisory
- github.com/BookStackApp/BookStack/security/advisories/GHSA-8wfc-w2r5-x7crnvdThird Party Advisory
News mentions
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