Book Stack version 23.10.2 allows filtering local files on the server. This is possible because the application is vulnerable to SSRF.
https://www.bookstackapp.com/blog/bookstack-release-v23-10-3/
https://fluidattacks.com/advisories/imagination/
Source: Mitre, NVD
Published: 2023-11-20
Updated: 2025-05-19
Base Score: 6.8
Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:N/A:N
Severity: Medium
Base Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS: 0.01381