MarsCTF 1.2.1 has an arbitrary file upload vulnerability in the interface for uploading attachments in the background.
https://github.com/b1ackc4t/MarsCTF/issues/10
https://github.com/b1ackc4t/MarsCTF/blob/V1.2.1/src/main/java/com/b1ackc4t/marsctfserver/service/impl/CTFFileServiceImpl.java#L46
Source: Mitre, NVD
Published: 2023-06-05
Updated: 2026-06-17
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Severity: Critical
Base Score: 9.8
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.00351