CVE-2020-26260
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…
Does this matter?
Lower severity and a low EPSS score (0.84%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- EPSS
- 0.84% probability · 56th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-74
- Affected
- bookstackapp/bookstack
- Source
- security-advisories@github.com
References
- https://bookstackapp.com/blog/beta-release-v0-30-5/Vendor Advisory
- https://github.com/BookStackApp/BookStack/releases/tag/v0.30.5Release Notes, Third Party Advisory
- https://github.com/BookStackApp/BookStack/security/advisories/GHSA-8wfc-w2r5-x7crThird Party Advisory
- https://bookstackapp.com/blog/beta-release-v0-30-5/Vendor Advisory
- https://github.com/BookStackApp/BookStack/releases/tag/v0.30.5Release Notes, Third Party Advisory
- https://github.com/BookStackApp/BookStack/security/advisories/GHSA-8wfc-w2r5-x7crThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.