A user could create a docx or odt file with a # in the filename with confidential information such as a credit card number and have it not be marked as confidential.
https://hackerone.com/reports/3682163
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-111128
Source: Mitre, NVD
Published: 2026-10-27
Updated: 2026-10-28
Base Score: 4
Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:N/A:N
Severity: Medium
Base Score: 4.3
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS: 0.00207