Vulnerability Details : CVE-2020-26260
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.
Exploit prediction scoring system (EPSS) score for CVE-2020-26260
Probability of exploitation activity in the next 30 days: 0.06%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 25 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2020-26260
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
5.5
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:P/A:N |
8.0
|
4.9
|
NIST |
|
6.4
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
3.1
|
2.7
|
NIST |
|
6.4
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
3.1
|
2.7
|
GitHub, Inc. |
CWE ids for CVE-2020-26260
-
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.Assigned by:
- nvd@nist.gov (Primary)
- security-advisories@github.com (Secondary)
References for CVE-2020-26260
-
https://bookstackapp.com/blog/beta-release-v0-30-5/
Vendor Advisory
-
https://github.com/BookStackApp/BookStack/security/advisories/GHSA-8wfc-w2r5-x7cr
Third Party Advisory
-
https://github.com/BookStackApp/BookStack/releases/tag/v0.30.5
Release Notes;Third Party Advisory
Products affected by CVE-2020-26260
- cpe:2.3:a:bookstackapp:bookstack:*:*:*:*:*:*:*:*