RosarioSIS versions before 12.9 fail to validate the filename request parameter in Users and Students modules, allowing authenticated users to unlink allow-listed files via path traversal. Attackers can use parent-directory sequences to escape upload directories and delete CSS, XML, JSON resources and other users' documents throughout the installation.
https://gitlab.com/francoisjacquet/rosariosis/-/commit/701f9c07330157181362927a40d4f8dcc8094d90
https://gitlab.com/francoisjacquet/rosariosis
https://gist.github.com/kazisabu/68bd095bc05b2341db318a063e05e644
Published: 2026-09-17
Updated: 2026-09-22
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:C/A:P
Severity: High
Base Score: 7.1
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Severity: High
Base Score: 7.1
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
Severity: High
EPSS: 0.00391